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?

The Little ant seems to be always confused. Do you know why?

What four weights can be used to balance from 1 to 30 pounds?

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

Look at the picture and find out which square is not linked with any of the other squares.

I don't get anymore wetter, no matter how much rain falls on me.

You bought me for dinner but never eat me. What am I?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

What has 13 hearts but no other organs?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?