Question

which term of an A.P. 420,414,408,402,... will be zero​

Answer 1

Answer:

Hey!!

Step-by-step explanation:

Refer attachment...

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Answer 2

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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