Question

what term is 56 if an=6 and the common difference d=5 of an arithmetic sequence ?
a.6th term
b.9th
c.10th
d.11th​

Answer 1

Given that a = 6 and d = 5

An = a + (n-1)d

56 = 6 + (n-1)5

50 = (n-1) 5

10= n-1

n = 11

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