Can you count the number of triangles in the picture below?

Which is faster, Heat or Cold ? Explain.

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

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Imagine you are in a room with no windows or doors. How will you get out?

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

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.