Math, asked by sathivalamkulam, 2 months ago

Find the sum of first 25 term of the arithmetic sequence 19,28,37

Answers

Answered by ishankamboj2509

2

Step-by-step explanation:

a=19. d=28-19=9. n=25

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

S25=25/2(38+24×9)

=25(19+108)

=25(127)

=3175

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