Question

if the give a.p is 3,12,21,30,39,.... find 10 th term using formula​

Answer 1

Answer:

A.P = 3,12,21,30,39

d = 12-3 = 9

a = 3

n = 10

a₁₀ = ?

an = a+ (n -1) d

a₁₀ = 3 + (10 - 1) x 9

a₁₀ = 3 + 9 x 9

a₁₀ = 81 + 3

a₁₀ = 84

thus the 10th term of the AP is 84

Step-by-step explanation:

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