Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Replace the question mark with the correct number in the below-given picture?

Remove two matchsticks to make the below equation correct.

Can you write down eight eights so that they add up to one thousand?

Using Only Five 5's and any mathematical operator make sum as 37

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

Count the number of triangles in the below picture?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?