what does the below rebus means?

What is at the end of a rainbow?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

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

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

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?

When can we add 2 to 11 and get 1 as the correct answer?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

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