Math, asked by SyedRehanKazi, 7 months ago

If a is the frist trem, d is the common on different, n is the number of trems the sum to n tems of an AP is ----------​

Answers

Answered by Anonymous
1

Answer:

Sn=n/2 (2a+(n-1) d) is the answer.........

Answered by rock2604
0

Answer:

Sn=n/2[a+a+(n-1)d]

Sn=n/2(a+an)

Step-by-step explanation:

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