Who is that with a neck and no head, two arms and no hands? What is it?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

There is something which you can be arrested for attempting but not for successfully completing.

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

What do you get if you add 2 to 100 four times?