Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

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

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

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?

If eleven plus two equals one, what does nine plus five equal?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G