How can you drop a raw egg from a height onto a concrete floor without cracking it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

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

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Can you count the number of triangles in the given figure?

Solve the counting riddle by identifying the number of triangles in the given picture.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?