Multiple Choice Questions on Three numbers which are co prime to each other are such that the product of the first two is 286 and........... for CDS Exam Preparation

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Multiple Choice Questions

Three numbers which are co prime to each other are such that the product of the first two is 286 and...........

Quantitative Aptitude (CDS) Number System
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    Three numbers which are co-prime to each other, are such that the product of the first two is 286 and that of the last two is 770. What is the sum of the three numbers?

     

    85

    Incorrect Answer

    80

    Incorrect Answer

    75

    Incorrect Answer

    70

    Correct Answer
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    Explanation:

    Let the numbers be = p, q and r

    Now, p*q = 286 = 2 *13 * 11 (After factorization)

    q*r = 770 = 11 * 7 *5 *2

    Since the numbers are co-prime, so, q = 2*11 = 22 ,  p = 13,  r = 35

    Sum of the three numbers = 22 + 13 + 35 = 70

    By: Munesh Kumari
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