Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Find the missing number in the image below.

Replace the question mark with the correct number in below Picture:

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

What am I?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

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