3 Envelops Riddle
You are sitting in front of your interviewer. He gives you three envelopes. One of them contains an offer letter and the other two are empty. You pick up one of them. Now, the interviewer opens up one of the envelope lying on the table and you find out that it is blank.
Now, he gives you a chance to switch your envelope with the one on the table. Would you switch it? Why or why not?
Now, he gives you a chance to switch your envelope with the one on the table. Would you switch it? Why or why not?
Hint:
Yes, you should switch the envelope. In the beginning when you picked up the envelope, you had a 1/3 probability of finding an offer letter in the envelope. There was 2/3 chance that the letter was there in the two envelopes on the table.
If you keep your selected envelope, you still have a 1/3 chance of finding an offer letter in that. However, since the interviewer has removed one empty envelope from the table, if you switch, you have a probability of 2/3 that the offer letter is inside that. Did you answer this riddle correctly?
YES NO
If you keep your selected envelope, you still have a 1/3 chance of finding an offer letter in that. However, since the interviewer has removed one empty envelope from the table, if you switch, you have a probability of 2/3 that the offer letter is inside that. Did you answer this riddle correctly?
YES NO
A Walk In The Desert Riddle
Four men walk into the desert. Suddenly all four are simultaneously knocked out. They awake buried to their heads in the sand unable to look anywhere but straight ahead. They are positioned so that each man sees another's head before him. However between the first and second man there is a separating wall.
So the first man sees only desert. The second man sees only wall. The third man sees another's head and a wall. The fourth man sees two heads and a wall. On top of each mans head is a hat. The underside of each cap is black, but the outside of each cap is either blue or white. Before any of the men can speak, their captors tell them if they speak, they die. However, if any of them can guess the color of their cap on the first try they go free. The captors tell them that there are two blue caps and two white caps.
Being an omniscient observer of the situation, we know that the order of the caps are: blue, white, blue, white. So knowing the perspective of each man in the sand, and that they can only see the color of caps/wall/desert in front of them, which of the four men knows for certain the color of his own cap. More importantly: why?
So the first man sees only desert. The second man sees only wall. The third man sees another's head and a wall. The fourth man sees two heads and a wall. On top of each mans head is a hat. The underside of each cap is black, but the outside of each cap is either blue or white. Before any of the men can speak, their captors tell them if they speak, they die. However, if any of them can guess the color of their cap on the first try they go free. The captors tell them that there are two blue caps and two white caps.
Being an omniscient observer of the situation, we know that the order of the caps are: blue, white, blue, white. So knowing the perspective of each man in the sand, and that they can only see the color of caps/wall/desert in front of them, which of the four men knows for certain the color of his own cap. More importantly: why?
Hint:
The third man. This is because he knows there are only two of each color cap. If the man behind him (the fourth man) saw two caps that were the same color in front of him, he would know that his own must be the opposite. However, because the caps alternate in color. The fourth man has only a 50% chance of getting his hat color correct, so therefore he stays quiet. The third man realizes that the fourth man is quiet because he must not see two caps of the same color in front of him, otherwise the fourth man would say the opposite of the caps in front of him. Therefore, the third man presumes his own cap must be the opposite of the mans in front of him, and his presumption is correct. Under this same logic, after the third man speaks his color hat, the second man, even though he sees only wall, would be the next to go free, because he knows his cap must be the opposite of whichever color the third mans cap was. Did you answer this riddle correctly?
YES NO
YES NO
The 4th Of July Flame Riddle
Hint:
The 4th Of July Picnic Riddle
Hint:
Many Things Can Be Played Riddle
If youre bored and have a set of these
There are many things that can be played
Each has a number, letter or head
And a diamond, club, heart or a spade
What is it?
There are many things that can be played
Each has a number, letter or head
And a diamond, club, heart or a spade
What is it?
Hint:
Read From Both Ends Riddle
Riddle me this
Pronounced as one letter, and written with three, two letters there are, and two only in me. I'm double, I'm single, I'm black, blue, and gray, I'm read from both ends, the same either way.
What am I?
Pronounced as one letter, and written with three, two letters there are, and two only in me. I'm double, I'm single, I'm black, blue, and gray, I'm read from both ends, the same either way.
What am I?
Hint:
Shaped Like An L Riddle
Im usually seen at Christmas
But Im not a stocking or a bell
I am red and white in color
And shaped a bit like the letter L
I am a?
But Im not a stocking or a bell
I am red and white in color
And shaped a bit like the letter L
I am a?
Hint:
Retaining Pronunciation Riddle
What English word retains the same pronunciation, even after you take away four of its five letters?
Hint:
The Longest, Non-scientific Word
Hint:
What is the longest, non-scientific word to have all of its letters in alphabetical order? Did you answer this riddle correctly?
YES NO
YES NO
Enter With A Gong Riddle
Im a word, six letters long,
I sometimes enter with a gong.
All in order from A to Z,
I start with the letter B.
What is the word?
I sometimes enter with a gong.
All in order from A to Z,
I start with the letter B.
What is the word?
Hint:
Begins
It has six letters, when a meditation begins they sound the gong, and the letters are in alphabetical order. Did you answer this riddle correctly?
YES NO
It has six letters, when a meditation begins they sound the gong, and the letters are in alphabetical order. Did you answer this riddle correctly?
YES NO
Discovered By You Riddle
The letters of the alphabet but only just a few;
It's hard to say if I was invented or just discovered by you.
What am I?
It's hard to say if I was invented or just discovered by you.
What am I?
Hint:
A Synonym Of Drag Riddle
Im a five letter word. Remove my last two letters and Im a synonym of drag. My second and third letters form an exclamation and my first and second letters are a homophone with a number. What am I?
Hint:
Magic Grass.
At a garden shop theyre selling Magic Grass, a patch of sod that doubles in size every day. A man goes to buy some figures that his garden is big enough that if he buys one patch, it will cover his garden in fourteen days, because each day it doubles in size. So he decides to speed up the process, and buys two patches of sod.
How many days will it now take for the Magic Grass to cover his garden?
How many days will it now take for the Magic Grass to cover his garden?
Hint:
Mail Time Birds Riddle
Hint:
Little Airy Creatures
We are little airy Creatures,
All of diffrent Voice and Features,
One of us in Glass is set,
One of us youll find in Jet,
Tother you may see in Tin,
And the fourth a Box within,
If the fifth you should pursue
It can never fly from you.
What are we?
All of diffrent Voice and Features,
One of us in Glass is set,
One of us youll find in Jet,
Tother you may see in Tin,
And the fourth a Box within,
If the fifth you should pursue
It can never fly from you.
What are we?
Hint:
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