Question 8

Select the option thatis related to the third numberin the same way as the second numberis related to the first number.
7 : 329 :: 9 : ?

Solution

$$(7)^3 - 7 \times 2 = 343 - 14 = 329$$
Similarly,
$$(9)^3 - 9 \times 2 = 729 - 18 = 711$$
$$\therefore$$ The correct answer is option C.

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