Can you convert the number zero(0) into a positive number using just one mathematical operator ?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

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

What is always in front of you but can’t be seen?

If two's company, and three's a crowd, then whats four and five ?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you count the number of quadrilaterals in the picture below?