I look at you, you look at me, I raise my right, you raise your left. What am I?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

What two things can you never eat for breakfast?

Which five letter word can be added at the end of below word to form a
valid word?

> Pin
> Check
> Boiling
> View

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Solve the puzzle by telling what does below picture means.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?