Math, asked by Michelle171, 20 days ago

Find the sum of the first 20 terms of the A.P. 1,3,5,7...

Answers

Answered by sanathkumarganapurap
0

Answer:

try your own brother or sister

Answered by bhuvannr782006
0

Answer:

400

Step-by-step explanation:

S20 =20/2 [2×1+(20-1)2]

=10[40]

=400

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