A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

I am an odd number. Take away a letter and I become even. What number am I?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

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.

Using Only Five 5's and any mathematical operator make sum as 37

How do you go from 98 to 720 using just one letter?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.