Question

5th term is 30 a=2 find d

Answer 1

a+4d=30
(given a=2)
so
2+4d = 30
4d = 30 -2
d = 28 ÷ 4
d = 7

Answer 2

a = 2
a5 = 30
d =?

We know that,

an = a + (n - 1)d

Therefore, a5 = a + (5 - 1)d
ie, 30 = 2 + 4d
30 - 2 = 4d
28 = 4d

Therefore, d = 28 /4
d = 7

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@Reema