which term of the AP 72,63,54------is 0?

Asked by riyaliz | 1st Jul, 2008, 08:54: PM

Expert Answer:

nth term = a +(n-1)d

0 = 72 + (n-1)(-9)

0 = 72 -9n + 9

9n = 72 + 9

9n = 81

n = 9

Answered by  | 1st Jul, 2008, 11:44: PM

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