3 months ago

Between what pair of numbers is the product of 289 and 7?

1 answer:

4 0

Given that 289 is situated between 200 and 300, when multiplying 289 by 7, the result will fall between 200 times 7 and 300 times 7.

Thus, the product of 289 and 7 lies between 1,400 and 2,100.

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c) P(X=4)=P({0, 0, 1, 1, 1, 1})+...+P({1, 1, 1, 1, 0, 0}), where each case has an identical probability.

$P(X=4)=(^6_4)P({1, 1, 1, 1, 0, 0})=\frac{6!}{4!(6-4)!}(\frac{6}{40} \frac{5}{39} \frac{4}{38} \frac{3}{37} \frac{34}{36} \frac{33}{35} )=2.19\times 10^{-3}$

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3 months ago