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2 years ago

There is 35 boys and 42 girls what is the ratio

Mathematics

2 answers:

8_murik_8 [283]2 years ago

5 0

35:42, thats pretty much there all is to it... or 35/42

kupik [55]2 years ago

4 0

35 divided by 7 is 5 and 42 divided by 7 is 6 and it should actually be 5:6

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Answer:

(a)

The probability that you stop at the fifth flip would be

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(b)

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Step-by-step explanation:

(a)

Case 1

Imagine that you throw your coin and you get only heads, then you would stop when you get the first tail. So the probability that you stop at the fifth flip would be

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Case 2

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Therefore the probability that you stop at the fifth flip would be

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(b)

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Therefore, suppose that $p = 0.5$ , then the expected number of flips needed would be 1/0.5 = 2.

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Step-by-step explanation:

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