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1. If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:





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  • By: guest on 01 Jun 2017 05.48 pm
    Let the numbers be a and b. Then, a + b = 55 and ab = 5 x 120 = 600. The required sum = 1 + 1 = a + b = 55 = 11 a b ab 600 120
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