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

What always comes into a house through the keyhole?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

In the image given, you can find several triangles. Can you count them all?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What country can make you shiver?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?