A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

In which direction should the missing arrow point?

The more it dries, the wetter it becomes. Can you tell what it is?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What is next number in the pattern below:

131 517 192 123 ?

why number 8549176320 is one of a kind?

Can you find the 09 errors in the picture below?

Find the missing number in the image below.