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Answered

3. In rolling a pair of dice, find the probability of not rolling a sum of 7.
A. 1/36
B. 5/36
C. 5/6
D. 5/12

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3. In rolling a pair of dice, find the probability of not rolling a sum of 7.

A. 1/36

B. 5/36

C. 5/6

D. 5/12

ANSWER

  • C. 5/6

EXPLAIN

  • The probability of not rolling a 7 on any one roll is 5/6.

SOLUTION

The probability of not rolling a 7 on any one roll is 5/6. The probability of not rolling a 7 in 28 rolls is

(5/6)28 = 0.006066, or about 1 in 165.

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