What English word has three consecutive double letters?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

what does the below math rebus puzzle mean?

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?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

There are forty elephants and they have forty-fore heads. How can this be possible?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?