Count the number of triangles in the below picture?

What can go through glass without breaking it?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What English word has three consecutive double letters?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Can you count the number of squares in the figure below?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?