2, 3, 5, 9, 17, _ What is the next number in the sequence?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

It is always ahead of me yet I can never see it. What is it?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

What is black when you buy it, red when you use it, and gray when you throw it away?

What goes up but never comes down?

When can we add 2 to 11 and get 1 as the correct answer?