Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

What is the end of everything?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

How many triangles are there on the puzzle below?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Which city is three-fifths chick two third cat and 50% goat?

What does this rebus means ?

PROG WORKRESS

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?