Question

In an A.P., if a=15,d=-3, and an=0, then find the value of n.

Answer 1

Answer:

n=-4

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Step-by-step explanation:

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Answer 2

n is the 6th term

Step-by-step explanation:

As,we know:

an = a+(n-1)d

0 = 15+(n-1)(-3)

0 = 15-3n+3

0 = 18-3n

-18 = -3n

n = -18/-3

n = 6

Hence,the value of n is 6