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

There was a strange boy who was born before his father. How can this be possible?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

What has no start, end, or centre?

Can you find out the missing number in the grid?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

What does below chemistry rebus means?

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1