MBA Exam

if the ratio of harmonic mean of two numbers to the geometric mean is 12:13. find the ratio of the numbers. dont know the correct ans.. tag me in the answer

1) 4/9 or 9/4
2) 2/3 or 3/2
3) 2/5 or 5/2
4) 3/4 or 4/5

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MBA Other Question

If the roots of then which of the following relation must be true?

1) a = b, c = 0
2) ac = b<sup>2 </sup>
3) 4b<sup>2</sup> = ac
4) ac = 1
5) none of these
How many integral values of x satisfy the inequality

|1-|1/2-|1/3-|1/4-|1/5-x|||||<2

where x is areal number?

1) 6
2) 7
3) 8
4) 9
5) 10