What is both possible and impossible at the same time?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Find the missing number in the series below

13 -21 34 -55 ? -144

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Why 1729 is a magic number? Answer Logically.

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

What does the below mathematical rebus mean?