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Find n if the nth term of the AP −1, 3, 7, … is 95.
An = 25
Bn = 26
Cn = 24
Dn = 23
Answer & Solution
Correct answer: A. n = 25
a = −1, d = 4. aₙ = −1 + (n − 1)·4 = 95 ⇒ (n − 1)·4 = 96 ⇒ n − 1 = 24 ⇒ n = 25.
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