Question

pls answer me fast...........................​

Answer 1

Step-by-step explanation:

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Answer 2

let solve it by another easy method,......

let the terms first term be a and common difference be d

10/2(2a+(n-1)d)=175

2a+(10-1)d=35

2a+9d=35......1)

sum of first 20 terms=175+475

=650

20/2(2a+(20-1)d)=650

2a+19d=65........2)

subtracting 1 from 2)

we get

10d=30

d=3

put this in first

2a=35-27

2a=8

a=4

hence required AP is,4,7,10,13......