How many terms are there in the AP: 7, 13, 19, …, 205?

Topic: Number System
Subtopic: Arithmetic Progressions

A32

B33

C34

D35

Explanation

a = 7, d = 6, l = 205. l = a + (n-1)d => 205 = 7 + (n-1)*6 => 198 = (n-1)*6 => n-1 = 33 => n = 34.

Exam Relevance

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