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

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

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?

You see me once in June, twice in November, and not at all in May. What am I?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

John is the son of Jacob.
So,
Jacob is the_____of John's father?