What does the below rebus riddle means?

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

What Adam and Eve do not have but the rest of the people have?

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

I am a word that begins with the letter “i.” If you add the letter “a” to me, I become a new word with a different meaning, but that sounds exactly the same. What word am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

O_er_t_o_

Complete the missing letters of the given word.

Out of the nine cats that you can see in the picture, there are only two that are completely identical. Can you find them out?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.