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?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Count the Triangle in the figure given below:

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Can you count the number of lines in the below picture?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?