Math, asked by sidharthmb17, 9 months ago

Answer this please........................................

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Answered by aryan073

0

Answer:

TN, 78=3+(n-1)5

26=5n-5

21-5n

n=21/5

4) 14,28,42

5) use the formula sn=n/2(2a+(n-1)d

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