What does the below image rebus riddle means ?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

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

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

What does the below rebus riddle means?