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.

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

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Find the value of "a" by solving the maths equation in the picture below:

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?