I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Can you divide the below-given shape into four equal and identical pieces?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

What has hands, but can’t clap?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.