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Gennadij [26K]
3 years ago
11

An environmental scientist estimated the number of drops of water in two different jugs. He estimated that the smaller jug conta

ins 106,000,000 drops of water and the larger jug contains 8,460,000,000,000001 drops of water. What is the difference between the number of drops in the larger jug and the number of drops of water in the smaller jug?
Mathematics
1 answer:
LiRa [457]3 years ago
8 0
I believe it is 8,459,999,894,000,001
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The usher at a wedding asked each of the 80 guests whether they were a friend of the bride or of the groom. Find the probability
yawa3891 [41]

<u>Complete Question</u>

The usher at a wedding asked each of the 80 guests whether they were a friend of the bride or of the groom. The results are: 59 for Bride, 50 for Groom, 30 for both. Find the probability that a randomly selected person from this sample was a friend of the bride OR of the groom.

Answer:

0.9875

Step-by-step explanation:

Total Number of Guests which forms the Sample Space, n(S)=80

Let the Event (a friend of the bride) =A

Let the Event (a friend of the groom) =B

n(A) =59

n(B)=50

Friends of both bride and groom, n(A \cap B)=30

Therefore:

n(A \cup B)=n(A)+n(B)-n(A \cap B)\\n(A \cup B)=59+50-30\\n(A \cup B)=79

The number of Guests who was a friend of the bride OR of the groom = 79

Therefore:

The probability that a randomly selected person from this sample was a friend of the bride OR of the groom.

P(A \cup B) =\dfrac{n(A \cup B) }{n(S)} \\\\=\dfrac{79 }{80}\\\\=0.9875

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Answer:

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Step-by-step explanation:

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