Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

John was piloting a plane behind a car but was never able to overtake it. Why?

I know a number which is spelt in alphabetical order.
Do you?

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?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

What is harder to catch the faster you run?

Can you name some countries which do not have the alphabet 'A' in them?

John walks into the daily grocery shop and steals a $100 bill from the shop. An hour later John returns to the shop and buys some daily products for $40. John pays the owner the $100 bill and therefore the owner returns him $60.

How much money did the owner lose?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?