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?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

When 99 is considered higher than 100?

How many triangles are there in the picture below?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

What word is pronounced the same if you take away four of its five letters?

You see me once in June, twice in November, and not at all in May. What am I?

How many bananas can you eat if your stomach is empty?

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?