Math, asked by nikkikadam, 3 months ago

(i) Sn = "/2 [ [] + (n-1) x d] ...
formula
a) a
b) 2a
C) 2b​

Answers

Answered by anthonyhowardstark
1

Answer:

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

Step-by-step explanation:

Answered by sanketpatil6123
0

Answer:

formula of Sn is

n/2(2a+(n-1) ×d)

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