Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

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

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

What English word has three consecutive double letters?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.