How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

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?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Which is heavier: a ton of bricks or a ton of feathers?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?