Crossing The Bridge Riddle
There are two villages separated with a river. Each day, four people cross the river through a bridge to work on the other side and earn for their families. On one night when they were returning from work, they noticed that the bridge was about to collapse. Now all of them wanted to cross the bridge before it collapsed as no one wanted to be stuck on that end without their families.
They had just one torch with them and since it was the night time, they could not see without it. The bridge had become weak and it could only accommodate two people at a time. It was going to collapse in just 17 minutes.
The four people took different times to cross the bridge. First one took only a minute, second one took 2 minutes, third one took 5 minutes and the last one took 10 minutes.
How would all of them have managed to cross the bridge in time?
They had just one torch with them and since it was the night time, they could not see without it. The bridge had become weak and it could only accommodate two people at a time. It was going to collapse in just 17 minutes.
The four people took different times to cross the bridge. First one took only a minute, second one took 2 minutes, third one took 5 minutes and the last one took 10 minutes.
How would all of them have managed to cross the bridge in time?
Hint:
Let us denote the four people with A, B, C and D.
A takes 1 minute to cross, B takes 2, C takes 5 and D takes 10.
A and B cross first spending 2 minutes.
A comes back with torch taking 1 minute.
C and D cross taking 10 minutes.
B comes back with torch taking 2 minutes.
Finally, A and B cross the bridge taking 2 minutes.
2 + 1 + 10 + 2 + 2 = 17 minutes
Thus, this is the way they all managed to cross that bridge that night. Did you answer this riddle correctly?
YES NO
A takes 1 minute to cross, B takes 2, C takes 5 and D takes 10.
A and B cross first spending 2 minutes.
A comes back with torch taking 1 minute.
C and D cross taking 10 minutes.
B comes back with torch taking 2 minutes.
Finally, A and B cross the bridge taking 2 minutes.
2 + 1 + 10 + 2 + 2 = 17 minutes
Thus, this is the way they all managed to cross that bridge that night. Did you answer this riddle correctly?
YES NO
Switch Or Stick Riddle
There are three doors: Door 1, Door 2, and Door 3. Behind one of these doors lies eternal bliss, but behind the others lies eternal despair. You are allowed to choose any door, and you pick Door 1. Suddenly, Door 3 is swung open and revealed to be despair! You are give another choice: you may stick with the door you chose (1) or switch to the other (2). What should you do?
Hint:
The answer may surprise you: switch. Due to something called the Monty Hall Paradox, you will statistically have a better chance of making the "correct" choice. The concept is as follows:
Door 1 Door 2 Door 3
All have an equal chance to be correct:
Door 1: 1/3 Door 2: 1/3 Door 3: 1/3
After choosing Door 1, the remaining two have a 2/3 chance of containing the right choice:
Door1: 1/3 Doors 2 3: 2/3
If Door 3 is removed, the probability does not shift to 50:50. Instead, it is:
Door 1: 1/3 Door 2: 2/3
Thus, you should switch. Did you answer this riddle correctly?
YES NO
Door 1 Door 2 Door 3
All have an equal chance to be correct:
Door 1: 1/3 Door 2: 1/3 Door 3: 1/3
After choosing Door 1, the remaining two have a 2/3 chance of containing the right choice:
Door1: 1/3 Doors 2 3: 2/3
If Door 3 is removed, the probability does not shift to 50:50. Instead, it is:
Door 1: 1/3 Door 2: 2/3
Thus, you should switch. Did you answer this riddle correctly?
YES NO
Barking At The Door Riddle
If your dog is barking at the back door and your wife is yelling at the front door, who do you let in first?
Hint:
The dog of course ... at least he'll shut up after you let him in! Did you answer this riddle correctly?
YES NO
YES NO
Five Bridesmaids Riddle
Five bridesmaids threw a shower for their bride. Each brought a gift and made a favorite food of the bride. They all arrived at different times, and during the wedding each was wearing a different color of her choice. Determine the gift and food each bridesmaid brought, the time she arrived, and what color she chose for her dress.
1. The bridesmaid with the painting had trouble getting it in her car, and the bridesmaid with the potato salad got lost on the way, so they were the last two to arrive.
2. Amanda hated the color green and potato salad.
3. Kourtney and Selena did not wear the blue dress and did not bring the turkey sandwiches.
4. Stacie arrived before the bridesmaid with the painting, but after the bridesmaid who brought the sheets, and the bridesmaid who made the cheese dip.
5. The bridesmaid with a blue dress arrived 10 minutes before the bridesmaid who brought the sandwiches.
6. The bridesmaid with the veggie tray arrived 25 minutes after the bridesmaid who brought flatware, but before the bridesmaid who would be wearing a blue dress.
7. The five bridesmaids arrived in the following order: The one who baked the cake, Amanda, the one who would be wearing a yellow dress, the one with a toaster for a gift, and the one who arrived last.
8. Selena brought a cake with green frosting, the same color as her dress.
9. Amanda brought pink sheets as a gift to the bride, but she did not like pink for herself.
1. The bridesmaid with the painting had trouble getting it in her car, and the bridesmaid with the potato salad got lost on the way, so they were the last two to arrive.
2. Amanda hated the color green and potato salad.
3. Kourtney and Selena did not wear the blue dress and did not bring the turkey sandwiches.
4. Stacie arrived before the bridesmaid with the painting, but after the bridesmaid who brought the sheets, and the bridesmaid who made the cheese dip.
5. The bridesmaid with a blue dress arrived 10 minutes before the bridesmaid who brought the sandwiches.
6. The bridesmaid with the veggie tray arrived 25 minutes after the bridesmaid who brought flatware, but before the bridesmaid who would be wearing a blue dress.
7. The five bridesmaids arrived in the following order: The one who baked the cake, Amanda, the one who would be wearing a yellow dress, the one with a toaster for a gift, and the one who arrived last.
8. Selena brought a cake with green frosting, the same color as her dress.
9. Amanda brought pink sheets as a gift to the bride, but she did not like pink for herself.
Hint:
Selena; green; flatware; cake; 2:50
Amanda; purple; sheets; veggie tray; 3:15
Kourtney; yellow; towels; cheese dip; 3:20
Stacie; blue; toaster; potato salad; 3:35
Stephanie; pink; painting; turkey sandwiches; 3:45 Did you answer this riddle correctly?
YES NO
Amanda; purple; sheets; veggie tray; 3:15
Kourtney; yellow; towels; cheese dip; 3:20
Stacie; blue; toaster; potato salad; 3:35
Stephanie; pink; painting; turkey sandwiches; 3:45 Did you answer this riddle correctly?
YES NO
The Graveyard Of Ol' Man Jenkins
There was a girl who was extremely brave and always bragged about how brave she was. Many of her classmates got sick and tired of her boasting, so they decided to play a trick on her. One day, a group of boys and girls walked up to her and said, " If you're so brave, we all dare you to go to the old graveyard at the back of Ol' Man Jenkins mansion all alone at midnight. Stand in front of a tombstone, rumor has it that if you do, a bony hand will reach out and grab you, dragging you underground! You said you were brave so that shouldn't be so hard! To prove that you actually went, stick a knife in front of a tombstone so in the morning, we'll know you were there." Of course, the girl couldn't refuse and agreed to the dare. At midnight, she did just as her classmates asked and went to the graveyard with a pocketknife. The night was cold and windy, blowing her dress, chills went up her spine. She slowly walked up to a tombstone and quickly stuck the pocket knife into the ground. She was beginning to feel not as brave as she thought she was. Turning around as fast as she could, she just wanted to get out of there right away! But, there was a problem. Something was stopping her from moving. Was it a bony hand trying to drag her down? A shrill scream was heard. The next morning, the boys and girls went to the graveyard to see if the girl had been there. To their horror, she was there, dead.
1) What prevented the girl from escaping the graveyard?
2) How did the girl die?
1) What prevented the girl from escaping the graveyard?
2) How did the girl die?
Hint:
1) The girl was wearing a dress at the graveyard. It was dark, so she hadn't noticed where she stuck the knife in the ground. She accidently stuck it in her dress (and the girl DID NOT get hurt by the knife in any way). That is what prevented her from running away.
2) Since the knife had her stuck, she was frighted that the rumor of the bony hand was true and had grabbed her, trying to pull her into the ground. She was truly terrified and died of fright. Did you answer this riddle correctly?
YES NO
2) Since the knife had her stuck, she was frighted that the rumor of the bony hand was true and had grabbed her, trying to pull her into the ground. She was truly terrified and died of fright. Did you answer this riddle correctly?
YES NO
Haunted Halloween House Riddle
To spice up your Halloween, you decide to enter a haunted house with your girlfriend. As you enter, an eerie silence embraces you and you can see nothing because its dark. You fumble your way and try your luck to find the switches, but it turns out to be a waste as there is no electricity connection to the house.
When you decide to turn back, the door closes on you and you are trapped in the house with your girlfriend who has now started panicking.
While you are trying to console her, an evil laughter takes you by surprise. Then, you see a faint figure who tells you that you have three doors in front of you and you must take one of them; it is the only way to free yourself. The figure describes that the first door opens up to a compact space filled with a swarm of deadly bees and you will be stung endlessly by them. The second door opens up to the electricity chairs. You both will be strapped to the chairs for five minutes and exposed to high voltage electricity. The third door opens up with a pit that has no bottom and you will keep falling endlessly into nothingness.
While this leaves you all panicked, which door will you choose if you have no other choice?
When you decide to turn back, the door closes on you and you are trapped in the house with your girlfriend who has now started panicking.
While you are trying to console her, an evil laughter takes you by surprise. Then, you see a faint figure who tells you that you have three doors in front of you and you must take one of them; it is the only way to free yourself. The figure describes that the first door opens up to a compact space filled with a swarm of deadly bees and you will be stung endlessly by them. The second door opens up to the electricity chairs. You both will be strapped to the chairs for five minutes and exposed to high voltage electricity. The third door opens up with a pit that has no bottom and you will keep falling endlessly into nothingness.
While this leaves you all panicked, which door will you choose if you have no other choice?
Hint:
You must choose the door that opens with electric chairs. This is because there is no electricity in the house. Thus, you will just have to sit on the chairs for five minutes and then you will be free to go. Did you answer this riddle correctly?
YES NO
YES NO
50 Quarters Riddle
You have fifty quarters on the table in front of you. You are blindfolded and cannot discern whether a coin is heads up or tails up by feeling it. You are told that x coins are heads up, where 0 < x < 50. You are asked to separate the coins into two piles in such a way that the number of heads up coins in both piles is the same at the end. You may flip any coin over as many times as you want.
How can you do it?
How can you do it?
Hint:
Take x coins, flip all of them and put them in one pile. The rest of the coins form the second pile. Did you answer this riddle correctly?
YES NO
YES NO
Basket Full Of Hats
There is a basket full of hats. 3 of them are white and 2 of them are black. There are 3 men Tom, Tim, and Jim. They each take a hat out of the basket and put it on their heads without seeing the hat they selected or the hats the other men selected. The men arrange themselves so Tom can see Tim and Jim's hats, Tim can see Jim's hat, and Jim can't see anyone's hat.
Tom is asked what color his hat is and he says he doesn't know.
Tim is asked the same question, and he also doesn't know.
Finally, Jim is asked the question, and he does know.
What color is his hat?
Tom is asked what color his hat is and he says he doesn't know.
Tim is asked the same question, and he also doesn't know.
Finally, Jim is asked the question, and he does know.
What color is his hat?
Hint:
The hat is white. If Tom doesn't know his hat color then the other two men's hats cannot be both black otherwise he would know his is white. When Tim doesn't know his hat color either, that means Jim's hat could not be black otherwise Tim would have to know his hat was white to fulfill the information discovered through Tom's answer. Did you answer this riddle correctly?
YES NO
YES NO
Down The Volcano Riddle
A man and a woman just got married and they are flying to Hawaii for their honeymoon. As the couple were looking down into one of the largest volcanoes, the wife falls in and dies. The husband flies back to his home very sad.
The next day, he gets a phone call. The person on the phone said "I know who killed your wife."
Who killed the wife?
Who called the husband?
How did they know?
The next day, he gets a phone call. The person on the phone said "I know who killed your wife."
Who killed the wife?
Who called the husband?
How did they know?
Hint:
The husband killed his wife.
The person who called was a flight attendant, because after reading about the death of his wife in the Newspaper she realized he bought one round trip ticket for himself and a one way ticket for his wife. Did you answer this riddle correctly?
YES NO
The person who called was a flight attendant, because after reading about the death of his wife in the Newspaper she realized he bought one round trip ticket for himself and a one way ticket for his wife. Did you answer this riddle correctly?
YES NO
Throwing A Basketball Riddle
A man takes a basketball and throws it as hard as he can. There is nothing in front, behind, or on either side of him, and yet, the ball comes back and hits him square in the face. How can this be?
Hint:
A Country Of Great Animals
What country has great animals
Like a large bird called an emu
A cute and cuddly koala
Or a big hopping kangaroo?
Like a large bird called an emu
A cute and cuddly koala
Or a big hopping kangaroo?
Hint:
4 Prisoner Hat Riddle
Now one of the man needs to call out the color of his hat else they all die in 10 mins. Which man will callout the color of his hat correctly and why?
Hint:
Answer is Man number 2.
Lets start by eliminating men. Man number 4 is at the other end of opaque wall facing other side. There is no way he can see any men or the color of their hat. So he is eliminated. Now man no 3 also cannot see anyone else - he cannot look back and he cannot see beyond wall. So he is eliminated too. Now man number 1 knows the color of man 2 and 3. Now lets say they (2 and 3) were wearing same color hat then man no 1 would know the color of his hat since there are 2 white and 2 black hat. But he keeps mum which means man 2 and 3 are wearing different hat. S0 man number 2 waits for sometime if he does not hear man 1 calling out that means man 2 and 3 are wearing different color hats. Since man 2 knows the color of hat wore by man 3 he know the color of his hat and calls it out. Did you answer this riddle correctly?
YES NO
Lets start by eliminating men. Man number 4 is at the other end of opaque wall facing other side. There is no way he can see any men or the color of their hat. So he is eliminated. Now man no 3 also cannot see anyone else - he cannot look back and he cannot see beyond wall. So he is eliminated too. Now man number 1 knows the color of man 2 and 3. Now lets say they (2 and 3) were wearing same color hat then man no 1 would know the color of his hat since there are 2 white and 2 black hat. But he keeps mum which means man 2 and 3 are wearing different hat. S0 man number 2 waits for sometime if he does not hear man 1 calling out that means man 2 and 3 are wearing different color hats. Since man 2 knows the color of hat wore by man 3 he know the color of his hat and calls it out. Did you answer this riddle correctly?
YES NO
What Brightens Mom's Day?
Here's a common riddle that'll get your brain working. It's not tough to solve but can be tricky if you don't think outside of the box a little. In regards to the riddle... for most of us this has indeed brightened up our moms day and is very big and always yellow. You have 30 seconds to solve.
Hint: Mom's children aren't always too happy about it.
How Many Pieces Of Chicken?
A fast food restaurant sells chicken in orders of 6, 9, and 20.
What is the largest number of pieces of chicken you cannot order from this restaurant?
What is the largest number of pieces of chicken you cannot order from this restaurant?
Hint:
After 6 all numbers divisible by 3 can be ordered (because they can all be expressed as a sum of 6's and 9's). After 26, all numbers divisible by three when subtracted by 20 can be obtained. After 46, all numbers divisible by three when subtracted by 40 can be obtained. After 46, all numbers fit into one of these 3 categories, so all numbers can be obtained. 43 is the last number that doesn't fall into one of these categories (44 = 20 + 6 * 4, 45 = 6 * 6 + 9). Did you answer this riddle correctly?
YES NO
YES NO
Brownie Currency
You're going to a friends house and want to give them some brownies. On the way to their house you cross 5 bridges. At each bridge you must pay a toll of half of your brownies to the owner. But they are all very nice and give you back a brownie from what you give them.
How many brownies must you start with to give your friend 2 brownies?
How many brownies must you start with to give your friend 2 brownies?
Hint:
Just 2.
Each time you give the owner of a bridge half of your brownies (1 brownie) they give you one back as well. Did you answer this riddle correctly?
YES NO
Each time you give the owner of a bridge half of your brownies (1 brownie) they give you one back as well. Did you answer this riddle correctly?
YES NO
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