4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

In the image given, you can find several triangles. Can you count them all?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

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?

The Little ant seems to be always confused. Do you know why?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Buy me, smell me or deliver me, I do not change.

Who am I?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?