What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

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

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

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?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211