Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What is black when you buy it, red when you use it, and gray when you throw it away?

How many triangles are there on the puzzle below?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?