Answer:
he bought three math books and four english books
Step-by-step explanation:
26x3=78 (three books)
28x4=112 (four books)
112+78=190
Answer:
Give me a second I know this one.
Step-by-step explanation:
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Answer:
d
Step-by-step explanation:
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correct ans is D
Answer: 0.0123
Step-by-step explanation:
Given : Customers leaving a subway station can exit through any one of three gates.
The probability of selecting any particular gate =
Sample size : n= 4
Using binomial distribution,
, where P(x) is the probability of getting success inn x trials , n is the number of trails and p is the probability of getting success in each trial.
Then , the probability that among a sample of 4 customers, they all exit through the same gate.
Hence, the probability that among a sample of 4 customers, they all exit through the same gate = 0.0123
I am not sure if this is right , but I tried . I hope I helped !