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Arithmetic sequence is1/7,2/7,3/7…What i...

Arithmetic sequence is`1/7,2/7,3/7…`What is the sum of the first 7 terms of this sequence?

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a) 1/7,2/7,3/7,…….. First integer =7/7=1
b) Sum of the first 7 terms = `7/2(1/7+7/7)=7/2 xx 8/7 = 4`
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