If 21x = 79x, what is the value of x?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am quite hot but become too cold if you remove the first two letters. What am I?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Can you count the number of blocks in the picture below?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

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?