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

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?