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Find the 12th term of AP …

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Find the 12th term of AP If Sn is 134

    • Posted by Narinder Kaur 9 months, 2 weeks ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Preksha Jain 9 months, 2 weeks ago

    Sn=n/2[2a+(n-1)d] Given:Sn=134 and n=12 i.e., 134=12/2[2a+(12-1)d] We need to solve for d 22a+66d=134 22a+66d-134=0 11a+33d-67=0 Now, we need to find d by substituting known values: 11a+33d=67 I can help you till here do you have any values for a?

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