What is more useful when it is broken?

what does the below rebus mean?

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

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

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

If an electric train is travelling south, then which way is the smoke going?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59