If 3 + 9 = 31; 15 + 12 = 45; 18 + 9 = 36, then 12 + 27=?
A
94
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B
14
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C
49
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D
53
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E
72
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Solution
The correct option is A 94 The rule is: Divide each number by 3 and write the quotients in the reverse order. 33+93=13⇒31;153+123=45; 18+9=183+93=63⇒36etc. ∴123+273=49⇒94.