MBA Exam

Find the harmonic mean of the roots of quadratic equation (5 + âˆš2)x2 â€“ (4 + âˆš5)x + (8 + 2âˆš5) = 0?

1) 2
2) 4
3) 7
4) 8

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MBA Other Question

define a number k such that it is the sum of the squares of the first M natural nos(i.e k=1^2+2^2+...+m^2), where m<55. how many valuues of m exist such that k is divisible by 4?

1) 10
2) 11
3) 12
4) 13
Let S denote the sum of three natural numbers. Let D denote the sum of the products of them taken two at a time. Let P denote their product. If 3S + D = 2P, how many combinations are there for the numbers?

1) 3
2) 5
3) 6
4) 7