Find the missing letter in the last circle logically in the given below picture.

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?

What does the below rebus puzzle mean?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

Solve the counting riddle by identifying the number of triangles in the given picture.

If a wheel has 54 spokes, how many spaces are there between the spokes?

What type of tree can I carry in my hand?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

What am I?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?