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Exercise 5.1.3

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Since divisible by 3 and by 7 are independent of each other, So the fraction of integers can be divisible by both 3 and 7 is: $\frac{1}{3} \frac{1}{7} = \frac{1}{21}$ .

The fraction of integers will be divisible by either 3 or 7 or both is then $\frac{1}{3} + \frac{1}{7} - \frac{1}{21} = \frac{9}{21}$

niuers

2020-03-20 00:00

Exercise 5.1.3

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