Math, asked by arunara2015, 11 months ago

किसी AP के प्रथम 25 पदो का योगफल ज्ञात करे जिसका nवा पद 7-3nदिया है​

Answers

Answered by turkazeempasha1
0

Answer:

1000

Step-by-step explanation:

we know that

Sn=n÷2(2a+(n-1)d). ;;nth term is

=25÷2(2×4+24)3

=1000

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