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?

What is the word or phrase?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Replace the question mark with the correct number in the below-given picture?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I can write cow in 13 letters.

Can You?

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

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

What does this mean?

CCCCCCC

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.