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

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Can you divide the below-given shape into four equal and identical pieces?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?