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: B
Explanation
1) 78AV → 156BY
78 × 2 = 156
A → B (+1)
V → Y (+3)
This forms a regular pattern.
2) 94TC → 198UF
94 × 2 = 188, but given 198
3) 108LD → 216MG
108 × 2 = 216
L → M (+1)
D → G (+3)
This also seems like a pattern, but the most straightforward option is usually taken in questions.
4) 136MI → 272NL
136 × 2 = 272
M → N (+1)
I → L (+3)
Option 2 is different