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?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Which is the smallest number that you can write using all the vowels exactly once?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

How is the moon similar to a dollar?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What begins with T, ends with T, and has T in it?

Can you find out the total number of triangles in the given figure?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Find the next number in the sequence

5 12 24 36 ?