ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

It is always ahead of me yet I can never see it. What is it?

Can you make a six-letter word using the letters N, A and B ?

What has to be broken before you can use it?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What month of the year has 28 days?

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

What building has the most stories?