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?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

What can go through glass without breaking it?

What came first, the chicken or the egg?

Identify The phrase in the picture.

Count the number of triangles in the picture below: