Math, asked by saravjit1974, 1 year ago

find the Sum of first 20 terms of the sequence whose nth term is an=An+B

Answers

Answered by Palak87643

15

Answer:

Step-by-step explanation:

a=A+B

a20=20A+B

Sn=n/2(a+an)

=== 20/2(A+B+20A+B)

==== 10(21A+2B)

Therefore, Sn= 210A+20B

Hope it's helpful

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