A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

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?

How many letters are in the alphabet?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Prove that twice of ten is the same as twice of eleven.

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?