Question

if nhi term of an AP is (2n+1),what is the sum of its first three terms?

Answer 1

Answer:

Step-by-step explanation:

S1 2(1) +1=3

First term=3

S2=2(2) +1=5

S3=2(3) +1=7

Add three terms =3+5+7=15

Answer 2

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