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

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Can you spot the man between the coffee bean in the picture below ?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Look at the picture and find out which square is not linked with any of the other squares.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C