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What is the number of terms in the series 117, 120, 123, 126,….., 333

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What is the number of terms in the series 117, 120, 123, 126,….., 333?

(a)

72

(b)

73

(c)

76

(d)

79

Answer:

(b)

Explanation

The series has 73 terms, calculated using the formula for an arithmetic progression.