10 Boxes Riddle
There are ten boxes containing some balls. Each of the ball weighs exactly 10 grams. One of those boxes have defective balls (all the defective balls weigh 9 grams each).
An electronic weighing machine is provided to you and you are allowed only one chance of weighing on it.
How will you find out which box has defective balls ?
An electronic weighing machine is provided to you and you are allowed only one chance of weighing on it.
How will you find out which box has defective balls ?
Hint:
Let us simplify boxes by naming them from 1 to 10.
Now the trick here is to pick different number of balls from different boxes. So to simplify things, we will pick balls corresponding to box number.
Thus, pick 1 ball from Box 1, 2 balls from box 2, 3 balls from box 3 and so on. You will have 55 balls altogether. Now, put them all in the balance.
If all balls were weighing accurate 10 grams, the total weight of the 55 balls would have been 550 grams. But one of the box must have had the defective balls.
Suppose if the defective balls were in box number 2, then the total weight will be 2 grams less than 550. If the defective balls were in box 8, the total weight will be less than 8 grams from 550. In this way, you will be able to identify which box has the defective balls. Did you answer this riddle correctly?
YES NO
Now the trick here is to pick different number of balls from different boxes. So to simplify things, we will pick balls corresponding to box number.
Thus, pick 1 ball from Box 1, 2 balls from box 2, 3 balls from box 3 and so on. You will have 55 balls altogether. Now, put them all in the balance.
If all balls were weighing accurate 10 grams, the total weight of the 55 balls would have been 550 grams. But one of the box must have had the defective balls.
Suppose if the defective balls were in box number 2, then the total weight will be 2 grams less than 550. If the defective balls were in box 8, the total weight will be less than 8 grams from 550. In this way, you will be able to identify which box has the defective balls. Did you answer this riddle correctly?
YES NO
Brightening The Day Riddle
I beam, shine and sparkle white,
I brighten the day with a single light.
I charm and enchant one and all,
I can counter the darkest pall.
What am I?
I brighten the day with a single light.
I charm and enchant one and all,
I can counter the darkest pall.
What am I?
Hint:
Gym Class Riddle
Four different-colored balls are being used in a gym class activity blue, red, yellow and orange. Each student must hold two different-colored balls, but no two students can have the same two colors (for example, only one student can hold the blue and red ball).
How many students can play the game?
How many students can play the game?
Hint:
Six. Explanation: 1. Blue Red
2. Blue Yellow
3. Blue Orange
4. Red Yellow
5. Red Orange
6. Yellow Orange Did you answer this riddle correctly?
YES NO
2. Blue Yellow
3. Blue Orange
4. Red Yellow
5. Red Orange
6. Yellow Orange Did you answer this riddle correctly?
YES NO
Light Years Away Riddle
Many light years away
Most are only seen at night
Although ones seen in the day
Hint:
Up In The Sky Riddle
This can be seen up in the sky
But it is not a kite
It is a giant ball of gas
Which gives you heat and ligh
But it is not a kite
It is a giant ball of gas
Which gives you heat and ligh
Hint:
Devour All Things Riddle
This thing all things devours,
Birds, beasts, trees, and flowers.
Gnaws iron bites steel,
Grinds hard stones to meal,
Slays king, ruins town,
And beats high mountain down
Birds, beasts, trees, and flowers.
Gnaws iron bites steel,
Grinds hard stones to meal,
Slays king, ruins town,
And beats high mountain down
Hint:
Time. Iron, steel, stone and virtually any substance will be worn down given enough time. Did you answer this riddle correctly?
YES NO
YES NO
The German Spy Riddle
However the manager was suspicious and decided to test him with a question before he trusted him. So he asked, what would you be sure to find in the middle of Toronto?
The spy thought fast and came up with an answer for the manager.
What did he say?
Hint:
Lost Head Riddle
Hint:
Ruins Town Riddle
Hint:
The Tri-Wizard Tournament Riddle
First think of the person who lives in disguise,
Who deals in secrets and tells naught but lies,
Next tell me whats always the last thing to mend,
The middle of middle and end of the end?
And finally give me the sound often heard,
During the search for a hard-to-find word.
Now string them together, and answer me this,
Which creature would you be unwilling to kiss?
Who deals in secrets and tells naught but lies,
Next tell me whats always the last thing to mend,
The middle of middle and end of the end?
And finally give me the sound often heard,
During the search for a hard-to-find word.
Now string them together, and answer me this,
Which creature would you be unwilling to kiss?
Hint:
Zebras And Ostriches In The Zoo
You count 80 heads and 200 legs.
Can you find the number of Zebras and the number of Ostriches in the Zoo?
Hint:
The number of Ostriches = 60 & The number of Zebras = 20 Did you answer this riddle correctly?
YES NO
YES NO
Cakes For Grandma Riddle
You are on your way to visit your Grandma, who lives at the end of the valley. It's her birthday, and you want to give her the cakes you've made.
Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.
How many cakes do you have to leave home with to make sure that you arrive at Grandma's with exactly 2 cakes?
Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.
How many cakes do you have to leave home with to make sure that you arrive at Grandma's with exactly 2 cakes?
Hint:
2: At each bridge you are required to give half of your cakes, and you receive one back. Which leaves you with 2 cakes after every bridge. Did you answer this riddle correctly?
YES NO
YES NO
The Forgetful Camping Trip
You go camping and realize you forgot your sleeping bag. You get it come back and then realize you forgot your flashlight. You go and get it, but when you come back you find your sleeping bag is missing. You then find out you forgot your tent. When you go back and get it you see your sleeping bag, get it and leave your tent. You go back to the camp site remembering you left your tent at home. You also come to see your flashlight is now missing. You get your tent and see your flashlight, you get that too. You then see your sleeping bag is gone. You are so exhausted you leave it at home. Why does every thing keep going missing?
Hint:
You bring your sleeping bag home when you realize you forgot your flashlight. You leave your sleeping bag at home. You realize you did not bring your tent, go home with you flashlight. Instead of picking up your tent you see your sleeping bag and take that instead leaving your tent and flashlight at home. You go back when you get to camp because you now need your flashlight and tent. You bring your sleeping bag. And when you get your tent and flashlight you leave your sleeping bag. Every time you bring something to the camp site you leave what you had there at home. Did you answer this riddle correctly?
YES NO
YES NO
Home To The Royals Riddle
Im a country in Great Britain
Where you might drink a nice cup of tea
My capital is called London
Thats home to the Royal Family
Where you might drink a nice cup of tea
My capital is called London
Thats home to the Royal Family
Hint:
The King And The Kingdom Riddle
Once there lived a king who did not allow anybody to leave the kingdom and any foreigners in his kingdom. There was only one bridge that connected his empire with the outer world. A guard who was a sharpshooter was specially assigned for a lookout on the bridge. According to the orders, anyone moving outside should be killed and anyone coming to his kingdom should be sent back. To take rest, the guard used to sit inside his hut for 5 minutes and return back on the lookout. The bridge took a minimum of 8 minutes to pass.
Even then, a woman was able to escape the kingdom without incurring any kind of harm to the guard.
How ?
Even then, a woman was able to escape the kingdom without incurring any kind of harm to the guard.
How ?
Hint:
The woman started walking across the bridge when the guard was inside the hut. She walked all the time he was inside (5 minutes) and then turned and moved back towards the kingdom. On approaching the kingdom he was asked for papers and since she did not have any, she was sent back. Did you answer this riddle correctly?
YES NO
YES NO
Add Your Riddle Here
Have some tricky riddles of your own? Leave them below for our users to try and solve.