dondre54
30.10.2020 •
Mathematics
10 friends (6 boys and 4 girls) decided to go to the movies. They only have enough money to buy 7 tickets. What is the probability that 5 boys and 2 girls get the movie tickets?
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Ответ:
0.3
Step-by-step explanation:
The number of ways to choose 5 boys from 6 is ₆C₅.
The number of ways to choose 2 girls from 4 is ₄C₂.
The number of ways to choose 7 people from 10 is ₁₀C₇.
P = ₆C₅ ₄C₂ / ₁₀C₇
P = 6 × 6 / 120
P = 0.3
Ответ:
d
Step-by-step explanation:
maybe