In an A.P. if a=21,d=-3 and nth term is equal to 0 ,then the value of n isi
8
7
9
6
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a + (n - 1)d = 0
21 - 3(n - 1)= 0
21 - 3n + 3 = 0
24 - 3n = 0
3n = 24
n = 8
21 - 3(n - 1)= 0
21 - 3n + 3 = 0
24 - 3n = 0
3n = 24
n = 8
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