The more of this there is, the less you see. What is it?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What month of the year has 28 days?

Who is that with a neck and no head, two arms and no hands? What is it?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

What do you think with the below Picture ?

I am sure no one can have two things for dinner. what are they?