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, etc. 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: 17 – 14 – 15
Option 2: 33 – 26 – 25
Option 3: 39 – 33 – 30
Option 4: 22 – 18 – 20
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Correct Answer: 33 – 26 – 25
Solution :
Let's check the options –
First option:
17 – 14 – 15→17 − 14 = 3 × 5 = 15
Second option:
33 – 26 – 25→33 − 26 = 7 × 5 = 35 ≠ 25
Third option:
39 – 33 – 30→39 − 33 = 6 × 5 = 30
Fourth option:
22 – 18 – 20→22 − 18 = 4 × 5 = 20
So, the second option is different from the other options. Hence, the second option is correct.
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