Count the number of balls in picture below:

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

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?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

What word is pronounced the same if you take away four of its five letters?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.