Solve below rebus puzzle?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

People put me on the table and cut me but do not eat me. What am I?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?