You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Identify The phrase in the picture.

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

The centre of the third figure is empty. What digit should fit inside?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?