Write code to do the following. Make sure you test each question with a suitable set of data 1) Return true if a number is odd 2) Return "Fizz" if a number is divisible by 3 3) Return "Buzz" if a number is divisible by 5 4) Return "Fizz Buzz" if a number is divisible by 3 and 5 5) Return the cost of a large letter where the cost is given by the weight as follows. Anything larger than 2kg is not permitted. | Weight | Cost | | ---- | ---- | | 100g | £1.95 | | 250g | £2.70 | | 500g | £3.30 | | 750g | £3.30 | 6) Return true if a number is prime.