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

Take one out and scratch my head, I am now black but once was red. What am I?

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

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

The dirtier I get, the whiter I look. Who am I?

Which word does the below Plexor means ?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?