Math, asked by vaibhavihegde, 11 months ago

find the sum of first twenty terms of ap series 2+7+12

Answers

Answered by kindergarden

1

here a= 2 and d=5 And a+19d=2+19×5=97

Answered by Anonymous

9

hey! your answer↓

a=2, d=5, S20=?

S20=n/2[2a+(n-1) d]

=20/2[2×2+(20-1) 5]

=10(4+19×5)

=10(4+95)

=10×99

=990

the sum of the 20 numbers of the app is

990

hope that it will help you

kindergarden: okk

vaibhavihegde: ok

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