Math, asked by Jayditya, 1 year ago

Is the above answer right.
please let me know.
no scam answers.

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Answered by redkargauri

1

Answer:

I feel that the formula for the last summation part is wrong. it should be n÷2×(2a+(n-1)d)

Answered by khanrehana20525

1

Answer:

yes it right answer but writing is very bad improve you writing and have a nice day bro

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