Can you find out which number multiplied by itself will give the output as 12345678987654321?

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

What does below Rebus say?

XLR8

Find the missing number in the image below.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Can you replace the question mark with the correct number?

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?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?