A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

What is full of holes but still holds water?

What does below Rebus say?

XLR8

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Can you find out who is the kidnapper in below Picture and why, Explain ?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?