Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

I am sure no one can have two things for dinner. what are they?

What can go up a chimney down, but can’t go down a chimney up?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Solve this riddle by finding the odd one out from the rest.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?