How do you go from 98 to 720 using just one letter?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What does this mathematical rebus means ?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

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

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?