Math, asked by shusantabanerjee, 1 year ago

if nth term of an a.p is ( 2 + 1 ) what is the sum of its first 3 terms

Answers

Answered by meenalramasamy

Answer:

Step-by-step explanation:

meenalramasamy: If nth term of an A.P = 2n+1

then, first term of A.P = 2(1)+1
= 2+1
= 3

then, second term = 2 (2) + 1

》4+1

》5

third term = 2 (3) +1

》6+1

》7

sum of terms = 3+5+7

sum of terms = 15

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