SOLUTION: Your drawer contains 9 red socks and 7 green socks. It’s too dark to see which are which so when you grab them you are randomly selecting socks. The probability that the first tw

Algebra ->  Probability-and-statistics -> SOLUTION: Your drawer contains 9 red socks and 7 green socks. It’s too dark to see which are which so when you grab them you are randomly selecting socks. The probability that the first tw      Log On


   

Question 1202236: Your drawer contains 9 red socks and 7 green socks. It’s too dark to see which are which so when you grab them you are randomly selecting socks. The probability that the first two you pick are both red socks is
Answer by ikleyn(52810) About Me  (Show Source):
You can put this solution on YOUR website!
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. . . is  %289%2F16%29%2A%288%2F15%29 = 72%2F240%29 = 6%2F20 = 3%2F10 = 0.3 = 30%.    ANSWER


The remarkable number of 16 in this problem is the full number of socks in the drawer initially:  16 = 9 + 7.

Solved, with full explanations.

The meaning of the formula is obvious from its structure,
so the formula is SELF-EXPLANATORY.