Math, asked by akshi8776, 9 months ago

the sum of 1,3,5,7,9.....upto 20th term is

Answers

Answered by abhiram200414626

0

Answer:

400

Step-by-step explanation:

Sn=n/2(2a+(n-1)d

Answered by soumyabanga100

1

Answer:

400

Step-by-step explanation:

Formula for finding sum of an Arithmetic Progression is S(n)= [n(2a+(n-1)d)]/2

here n=20

d=2

a=1

Putting values in the formula we get

=[20(2+19*2)]/2

=400

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