Multiple Choice Questions on The 5th term of an AP is 17 6 and the 9th term is 25 6 What is the 12th term ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The 5th term of an AP is 17 6 and the 9th term is 25 6 What is the 12th term ........

Quantitative Aptitude ( CCS) Arithmetic progression
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    The 5th term of an AP is 17/6 and the 9th term is 25/6. What is the 12th term?

    29/6

    Incorrect Answer

    31/6

    Correct Answer

    33/6

    Incorrect Answer

    34/6

    Incorrect Answer
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    Explanation:

    The 5th and 9th terms are (a + 4d) and (a + 8d).
    Equating these terms with their values and solving as simultaneous equations,
    we get a = 3/2 and d = 1/3.
    So the 12th term is (a + 11d) = (3/2) + (11/3) = 31/6.

    By: Amit Kumar
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