Question

For the A.P.:23,20,17…..which term is -16. ​

Answer 1

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Step-by-step explanation:

an = -16, a = 23, d = 23 - 20 = 3 and n =?

an = a + (n-1) d

-16 = 23 +(n-1) 3

-16 - 23 = 3n - 3

-39 = 3n - 3

-39 + 3 = 3n

-36 = 3n

n = -12

so -16 will never be any term of this A.P. series