Question

5.
Which term of the AP. 27, 24, 21,-...is zero?
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Answer 1

Answer:

In the given AP, a = 27 and d = -3

Let 0 be the nth term.

Then, a + (n - 1)d = 0

=> 27 + (n - 1) X -3 = 0

=> 27 - 3n + 3 = 0

=> n = 10

Therefore, the 10th term is 0