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 is more useful when it is broken?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Remove two matchsticks to make the below equation correct.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Out of four images which one is the odd one out?