Math, asked by chandanchandu21, 10 months ago

en
15. Find the sum of first twenty terms of Arith-
metic series 2 + 7 + 12 + ........ using suit-
able formula.

Answers

Answered by ranjanachaurasia6251

1

Step-by-step explanation:

2+7+12+17+22+27+32+37+42+47+52+57+62+67+

72+77+82+87+92+97 = 990

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