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Find 5th term of an A. …

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Find 5th term of an A. P. whose nth term is 3n-5.

    • Posted by Devesh Dewangan 6 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Tannu ? 6 years, 4 months ago

    Let n=1 so an= 3(1)-5= -2 Let ,n=2 3(2)-5= 1 A.P.=-2,1,4,7............ The a5= a +4d -2+4(3)=10

    1Thank You

    Yogita Ingle 6 years, 4 months ago

    Substitute 5 in place of n
    Given  An
    an= 3n -5
    By substitution, We get
    a5 = 3(5) - 5
    = 15 - 5
    = 10
    Therefore 5th term of a.p is 10.
     

    2Thank You

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