Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

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

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

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

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

I am a prime number.
The double of myself is equal to the square of me.

which number am I?