To find out the prevelance of smallpox vaccine use, a researcher inquired into the number of times a randomly selected 200 people aged 16 and over in African village had been vaccinated. He obtained the following figures: never 17 people: once 30: twice 58: three times. 51: four times 38: five times. 7. Assuming these proportions continue to hold exhaustively for the population of that village Let X

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A: It just a multiplication of 12 and 11

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A:

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A:

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A:

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A:

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A:

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A: I have stated the method for the solution

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A:

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A:

Q: 11C6

A: we know that,Cr=n!(n-r)!×r!nand r!=r(r-1)(r-2).....×2×1

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A: Five time 2 means multiplication of 5 and 2

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A: Given that

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A: The dot product of a=a1, a2, a3 and b=b1, b2, b3 is: a·b=a1b1+ a2b2+ a3b3

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A: To find .

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A: Given the back of a credit card shows a 3-digit card verification (CVC). The digits can be any…

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A:

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A:

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A:

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A:

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A:

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A: This is the problem of optimisation.

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A: Passcode has 3 chracters There are 3 categories