Question : Directions: Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?
(NOTE: Operations should be performed on the whole numbers. without breaking down the numbers into their constituent digits. E.g. 13 – operations on 13 such as adding/subtracting/multiplying ete. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
Option 1: 46 – 41 – 12
Option 2: 16 – 9 – 21
Option 3: 23 – 18 – 15
Option 4: 34 – 28 – 18
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Correct Answer: 46 – 41 – 12
Solution :
Let's check each option –
First option:
46 – 41 – 12→46 – 41 = 5; 5 × 3 = 15 ≠ 12
Second option:
16 – 9 – 21→16 – 9 = 7; 7 × 3 = 21
Third option:
23 – 18 – 15→23 – 18 = 5; 5 × 3 = 15
Fourth option:
34 – 28 – 18→34 – 28 = 6; 6 × 3 = 18
So, the first option follows a different pattern than the other three options. Hence, the first option is correct.
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