Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What occurs twice in a week, once in a year but never in a day?

What number should come in place of the question mark below?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is common among 11, 69, and 88?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?