Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

If you say my name, I will no longer exist. What am I?

What has hands, but can’t clap?

If eleven plus two equals one, what does nine plus five equal?

I am quite hot but become too cold if you remove the first two letters. What am I?

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

One night, Louis and Adam were sitting together. Adam was watching a movie while his wife Louis was reading a mystery book. Suddenly the power went out and Adam decided to go to bed, but strangely Louis kept on reading. There was no artificial light around, so Louis kept on reading. How come?

Can you count the number of triangles in the given figure?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?