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

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

A father's child, a mother's child, yet no one's son.

Who am I?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

Can you find out who is the kidnapper in below Picture and why, Explain ?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?