In the following question, four letter-number pairs are given. The letter-number on the left side of (–) is related to the letter-number on the right side of (–) with some Logic/Rule/Relation. Three pairs are similar on the basis of 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 number into its 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)
Show answer & explanation
Correct answer: A
Explanation
1) 108CX – 216DB
C → D (+1)
X → B (+4, not +3)
108 → 216 (×2)
2) 132DR – 264EU
D → E (+1)
R → U (+3)
132 → 264 (×2)
3) 244AH – 488BK
A → B (+1)
H → K (+3)
244 → 488 (×2)
4) 296PU – 592QX
P → Q (+1)
U → X (+3)
296 → 592 (×2)
Option 1 is different