1.

Which term of the A.P. 35, 28, 21, ... is zero?

Answer»

Answer:

N = 6

Step-by-step explanation:

0 = a+ (n-1)d

0 = 35 + (n-1)-7

0 = 35 + (-7n+7)

0 = 35-7n+7

7n = 35+7

7n = 42

n = 42/7

n = 6



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