Question

9:23::7:?

1)16 2)20 3)15 4)17​

Answer 1

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Let the unknown number be x.

$9:23::7:? \\ \frac{9}{23} = \frac{7}{x} \\ x = \frac{7 \times 23}{9} \\ x = \frac{161}{9} \\ x = 17.888$

Since 17 is the closest, your answer is option 4) 17