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the 8th term of an a.p is 37 and 12th term is 57 .find the a.p
please help this questions .please help.

  • maths -

    8th term is 37 ----> a+7d = 37
    12th term is 57 ---> a + 11d = 57

    subtract them:
    4d = 20
    d = 5

    into a+7d=37
    a+35=37
    a = 2

    A.P. is 2 7 12 17 ....

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