A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

What has no start, end, or centre?

What does below Rebus say?

XLR8

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?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?