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

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

What has one eye, but can’t see?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

How many triangles can you find in this given picture?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?