The value of x in 1: 5 :: x: 10 is

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Solution

The correct options are
A 1
B 2
$1 : 5 :: x : 10$
Product of the means = Product of the extremes.
$\Rightarrow$ $1 \times 10 = 5 x$
$\Rightarrow$ $10 = 5 x$
$\Rightarrow$ $x = 2$

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