Question : Directions: Select the odd group of numbers.
(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: (18 – 28 – 48 )
Option 2: (17 – 27 – 47 )
Option 3: (15 – 25 – 49 )
Option 4: (13 – 23 – 43 )
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Correct Answer: (15 – 25 – 49 )
Solution :
Let's check each option –
First option:
(18 – 28 – 48 ); 18 + 10 = 28; 28 + 20 = 48
Second option:
(17 – 27 – 47 ); 17 + 10 = 27; 24 + 20 = 47
Third option:
(15 – 25 – 49 ); 15 + 10 = 25; 25 + 20 = 45 ≠ 49
Fourth option:
(13 – 23 – 43 ); 13 + 10 = 23; 23 + 20 = 43
So, only the third option doesn't follow the same pattern as followed by the given set of numbers. Hence, the third option is correct.
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