which term of an A.P. 420,414,408,402,... will be zero
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Answer:
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Step-by-step explanation:
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Answered by
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Answer:
0 is the 71st term of the given AP series
Step-by-step explanation:
AP: 420, 414, 408, 402,........0
A = first term = 420
d= second term - first term = 414 - 420 = -6
An= last term = 0
we know,
An = A + (n - 1)d
0 = 420 + (n - 1)(-6)
-420 = (n - 1)(-6)
n - 1 = -420/-6
n - 1 = 70
n = 71
∴ 0 is the 71st term of the given AP series
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