Why is 6 afraid of 7?

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?

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 doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

How many triangles can you count in the figure given?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

I look at you, you look at me, I raise my right, you raise your left. What am I?