Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

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

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

It belongs to you, but other people use it more than you do. What is it?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?