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).
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2. i.e. (7 – 70 – 68).
The logic used here is: 1st letter × 10 = 2nd letter, 2nd letter - 10 = 3rd letter
Option 1: (6 – 60 – 50): 6 × 10 = 60, 60 - 10 = 50
Option 2: (7 – 70 – 68): 7 × 10 = 70, 70 - 10 = 60: This does not follow the logic.