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

Why 1729 is a magic number? Answer Logically.

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Decode the movie name from the below picture?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

Solve the puzzle by telling what does below picture means.

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?