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

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 came first, the chicken or the egg?

What is black when you buy it, red when you use it, and gray when you throw it away?

Which is faster, Heat or Cold ? Explain.

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Which alphabet is a part of our body?

Can you count the number of triangles in the given picture?

There is a place where if I stand up straight, I will still be considered sideways.

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?