Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

Find the value of "a" by solving the maths equation in the picture below:

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Find the next number in the series below

21 32 54 87 131 ?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

A farmer and his neighbour once went to Emperor Akbar"s court with a complaint. "Your Majesty, I bought a well from him," said the farmer pointing to his neighbour, "and now he wants me to pay for the water."
"That"s right, your Majesty," said the neighbour. "I sold him the well but not the water!"?
The Emperor asked Birbal to settle the dispute. How did Birbal solve the dispute?

I have teeth but i don't bite. Who Am I ?

I cannot talk, but I always reply when spoken to. What am I?

What does this say?

XLR8