Answer:
53.57%
Step-by-step explanation:
We have to calculate first the specific number of events that interest us, if at least 3 are girls, they mean that 2 are boys, therefore we must find the combinations of 3 girls of 5 and 2 boys of 3, and multiply that, so :
# of ways to succeed = 5C3 * 3C2 = 5! / (3! * (5-3)!) * 3! / (2! * (3-2)!)
= 10 * 3 = 30
That is, there are 30 favorable cases, now we must calculate the total number of options, which would be the combination of 5 people from the group of 8.
# of random groups of 5 = 8C5 = 8! / (5! * (8-5)!) = 56
That is to say, in total there are 56 ways, the probability would be the quotient of these two numbers like this:
P (3 girls and 2 boys) = 30/56 = 0.5357
Which means that the probability is 53.57%
Answer:
Step-by-step explanation:
2 3/12 - 6 10/12 =
2 1/4 - 6 5/6 =
9/4 - 41/6 =
27/12 - 82/12 =
- 55/12 or - 4 7/12 <====
In total the amount of money needed to be paid is 56 (you get it from 48 plus 8)
then divide it by seven to split the bill evenly
the answer is C
Answer:
c
Step-by-step explanation:
