Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Why is the Hole below a Lock?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?