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

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

Can you find out the number of the parking space in which the car is parked?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

Find the smallest sentence with all the English alphabet.

Forwards I am heavy, backward I am not. What am I?