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The sum of 3 numbers i …

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The sum of 3 numbers i n Ap is 12 and sum of their cubes is 288.find Ap

    • Posted by Sushant Thareja 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Pradhyumna G 6 years, 11 months ago

    Let Three numbers be a-d ,a ,a+d a-d+a+a+d=12 3a=12 a=4 Now , (a-d)3+a3+(a+d)3=288 Substitute the value of a (4-d)3 +64 +(4+d)3=288 Substitute the formula (a +b)3 You will get d Then you will get the required A.P

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