I am quite hot but become too cold if you remove the first two letters. What am I?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

Why do people go to bed?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

what does the below math rebus puzzle mean?

What is the last thing you take off before bed?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

People make me, save me, change me, raise me. What am I?

What goes up but never comes down?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?