What Time Should the last watch show in the below figure?

A man dies of old age on his 25 birthday. How is this possible?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

Count the squares in the matchstick puzzle below?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Why Wine Glass Stem is so long?

What is next number in the pattern below:

131 517 192 123 ?

Can you find the dog hidden in a group of pandas?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)