Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

There is a place where if I stand up straight, I will still be considered sideways.

What's the best place to go shopping in the ocean?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Prove that the below maths equation is true.

8 + 8 = 91

In the image below, can you find the value of an angle(y)

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

How can one talk without saying a single word?

What can you deduce from the following BrainBat?

CRY
LMKI