Math, asked by dakshka, 7 months ago

S 20 = for parallel series-3, 4, 11, 18 ... ....

Answers

Answered by venkateshpatil42

3

Step-by-step explanation:

please refer to the attached file

Attachments:

Answered by rahulchaudhary14

2

Answer:

S20=10+(-6+19×7)

=10+127

=137

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