Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

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

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What does this mathematical rebus means ?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

I am quite hot but become too cold if you remove the first two letters. What am I?

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?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?