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

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

Which fur should we be getting from the Lion?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Which tank will fill first?