During an interview, the interviewer ordered hot coffee for the candidate to relieve the stress. The coffee was kept before him. After a minute, the interviewer asked him, 'What is before you?' He replied 'Tea'.

The candidate was selected immediately. Why?

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?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What does this mean?

CCCCCCC

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?