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7 : 17 : : 9 : ––––––––––

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All

answer is D.

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Detailed Solution

Logic 1

$7 + 10 = 17, 9 + 10 \to 19$

Logic 2

$7 \times 2 + 3 = 17, 9 \times 2 + 3 \to 21$

Logic 3

$7 \times 3 - 4 = 17, 9 \times 3 - 4 \to 23$

$∴$ So all option are follows

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