Question : Directions: In the following question, four number pairs are given. In each pair, the number on the left side of (–) is related to the number on the right side of (–) with some logic/rule/relation. Three pairs are similar based on the same logic/rule/relation. Select the odd one out from the given alternatives.
(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: 15 – 220
Option 2: 9 – 84
Option 3: 13 – 172
Option 4: 11 – 124
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Correct Answer: 15 – 220
Solution :
Let's check the options –
First option:
15 – 220; (15)
2
+ 3 = 225 + 3 = 228 ≠ 220
Second option:
9 – 84; (9)
2
+ 3 = 81 + 3 = 84
Third option:
13 – 172; (13)
2
+ 3 = 169 + 3 = 172
Fourth option:
11 – 124; (11)
2
+ 3 = 121 + 3 = 124
So, only the first option is different from the other three options. Hence, the first option is correct.
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