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10 December, 07:05

Find the 30th term of an arithmetic sequence whose first term is 2 and common difference is 5. A. 143 B. 147 C. 152 D. 157

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  1. 10 December, 07:37
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    Un = a + (n-1) b

    U30 = 2 + (30-1) 5

    U30 = 2 + 29 (5)

    U30 = 2 + 145 = 147 (b)
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