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Multiple Choice Questions

If ax by cz and b2 ac then what is 1 x 1 z equal to ........

Quantitative Aptitude (CDS) Algebra

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If ax = by = cz and b2 = ac, then what is (1/x + 1/z) equal to ?

1/y

- 1/y

2/y

- 2/y

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Explanation:

ax = by = cz = k
a = k^1/x
b = k^1/y
c = k^1/z
given b² = ac, putting the above values of a,b,c in the equation we get
k^2/y = k^1/x .k^1/z
2/y = 1/x + 1/z

By: Munesh Kumari

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If ax by cz and b2 ac then what is 1 x 1 z equal to ........

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