Math, asked by rparasharng, 1 year ago

The sum of the first n term of an AP is I what the formula

Answers

Answered by MrCombat

25

Answer:

Sn = n/2 ( a + an)

Sn = n/2 {2a + ( n - 1)d}

Answered by MяƖиνιѕιвʟє

38

Answer:

Sn = n/2 ( a + an)

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