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

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

What is next number in the pattern below:

131 517 192 123 ?

Find out the missing number in the picture attached:

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?