Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

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

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

Our product and our sum always give the same answer. Who are we?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?