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Proportion

If a:b :: c:d...

Question

If a:b :: c:d, then,

A

a and d are means

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B

a and d are extremes

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C

a and c are means

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D

b and d are extremes

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Solution

The correct option is B a and d are extremes
a and d are extremes

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Similar questions

Q. According to given proportion:

a : b :: c : d

\frac{a + b x}{a - b x} = \frac{b + c x}{b - c x} = \frac{c + d x}{c - d x}, (x \neq 0)

a, b, c

d

\frac{a + b x}{a - b x} = \frac{b + c x}{b - c x} = \frac{c + d x}{c - d x} (x \neq 0)

, then show that

a, b, c

d

a, b, c

d

are positive, then

\begin{matrix} lim x \to \infty \end{matrix} {(1 + \frac{1}{a + b x})}^{c + d x}

\frac{a + b x}{a - b x} = \frac{b + c x}{b - c x} = \frac{c + d x}{c - d x} (x \neq 0) .

, then show that

a, b, c

d

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