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Question 210006
JEE Mathematics · Medium

Sequences and Series: AP nth term from end MCQ

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AP nth term from endMediumQuestion 210006

Question

In the AP 3, 7, 11, ..., 99, the number of terms is:
  1. A
    24
  2. B
    25
    Correct
  3. C
    26
  4. D
    27

Correct answer

25

Explanation

aₙ = a + (n−1)d → 99 = 3 + (n−1)4 → 96 = 4(n−1) → n−1 = 24 → n = 25.

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