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murzikaleks [220]
4 years ago
9

Katie creates a game in which 3 dimes are flipped at the same time. 5 points are awarded if all 3 dimes land on tails, but no po

ints are awarded for anything else. What is the probability of not getting any points?
A. 0.125
B. 0.875
C. 0.9875
D. 0.5

(I know it's not C)
Mathematics
2 answers:
Marat540 [252]4 years ago
7 0

Answer:

B. 0.875

Step-by-step explanation:

The probability of getting no points is the probability that at least 1 dime lands on heads.

And the probability that at least 1 dime lands on heads is 1 minus the probability of all three dimes landing on tails.

P = 1 − (1/2)^3

P = 1 − 1/8

P = 7/8

P = 0.875

lara [203]4 years ago
3 0

Answer:

The answer must be B, since there is 3 coins not 2 so it can’t be D and it is obviously not A nor C.

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