Math, asked by starboyyy9681, 1 year ago

S7 = 7/2 [2a + (7 - 1)d]
49 = 7/2 [2a + 16d]
7 = (a + 3d)
From where does 16 came

Answers

Answered by niranjandk03

0

Its not 16 its 6, because 7-1 gives 6

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