If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

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

Find
6 * 5 * 4 = ?

What does this simple rebus mean?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

How can you make a TV, a bed, a dog, and a car liquid?