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Question
Which term of the AP 72, 63, 54,... is 0 ?
(a) 8th (b) 9th (c) 10th (d) 11th
Which term of the AP 72, 63, 54,... is 0 ?
(a) 8th (b) 9th (c) 10th (d) 11th
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Solution
A=72, d=-9
0=72+(n-1)d
=72+(n-1)-9
-72÷-9=n-1
8=n -1
n=9
A=72, d=-9
0=72+(n-1)d
=72+(n-1)-9
-72÷-9=n-1
8=n -1
n=9
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