Why do you find that most of the buildings are deprived of the 13th floor?

What is the largest number you can write with just 3 digits?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What is the riddle which can be asked all day with a different correct answer each time.

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

What number do you get when you multiply all of the numbers on a telephone's number pad?