You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

I have no life, but I can die. What am I?

I look at you, you look at me I raise my right, you raise your left. What am I?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Prove that the below maths equation is true.

8 + 8 = 91

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Which tank will fill first?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?