alleryHow many terms are there in the AP 7, 13, 19, …, 205?
A34
B30
C33
D35
Answer & Solution
Correct answer: A. 34
a = 7, d = 6. aₙ = 205 gives 7 + (n − 1)·6 = 205 ⇒ (n − 1)·6 = 198 ⇒ n − 1 = 33 ⇒ n = 34.
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