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If nth term of an ap is 2n+1 what is thw sum of its firts three terms

Posted by Kamal Gupta 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Nishant Dubey 6 years, 11 months ago

Pagal ha tu is the only one who can be in a position to help

0Thank You

Gaurav Seth 6 years, 11 months ago

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

3Thank You

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CBSE > Class 10 > Mathematics