1/3s-6<24
A) {s|s<6
B){s|s<10
C){s|s<54
D){s|s<90

This is the beginning of all probability problems.Memorize it:
Probability =        (number of ways to be successful) divided by       (total number of possibilities) .
When you draw one from a deck of cards, there are 52 total possibilities.
How many red queens are there ?
-- Queen of hearts-- Queen of diamonds
There are two of them.
Probability of drawing one from the deck = 2 / 52  =  1/26  =  about  3.8% .