How do you go from 98 to 720 using just one letter?

What word is represented by this rebus?

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

I purchased an awesome ice cream cone having 5 different flavour scoops.
Five flavours are pistachio, mint-chip, strawberry, marshmallow, and raspberry

I will give u some clues so that you can figure out the order of flavours from bottom to top.
1. The bottom flavour of the cone has 10 letters.
2. The marshmallow scoop is between the pistachio and the mint-chip scoop.
3. marshmallow is the raspberry scoop but below the mint-chip scoop.

So can you figure out the flavour of ice cream in order from bottom to top?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I can write cow in 13 letters.

Can You?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?