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

What's a single-digit number with no value?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

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?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Can you write down eight eights so that they add up to one thousand?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?