Select the option that is related to the third number in the same way as the second number is related to the first number.
325 : 18 :: 226 : ?
The pattern is :
$$ x^2 +1 : x$$
Following this ,
$$ 18^2 +1 : 18$$ => 326:18
Following the same logic ,
$$ 15^2 +1 : 15$$ => 226:15
So , the answer would be option c)15.
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