Discussion

Explanation:

Number of multiples of 5 between 1 and 75 = 15

Number of multiples of 7 between 1 and 75 = 10

Number of multiples of 35 between 1 and 75 = 2

∴ Number of multiples of 5 or 7 between 1 and 75 = 15 + 10 – 2 = 23.

∴ Required probability = 23/75

Hence, option (c).

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