Three of the following numbers are alike in a certain way and one is different. Pick the odd one out.
(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /deleting /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: C
Explanation
The correct answer is option 3 i.e. 23 – 8 – 343.
Logic: (1st number + 2nd number) × 11 = 3rd number
Option 1) 12 – 7 – 209 → (12 + 7) × 11 = 19 × 11 = 209
Option 2) 19 – 11 – 330 → (19 + 11) × 11 = 30 × 11 = 330
Option 3) 23 – 8 – 343 → (23 + 8) × 11 = 31 × 11 = 341 (not 343).
Option 4) 15 – 9 – 264 → (15 + 9) × 11 = 24 × 11 = 264
So, 23 – 8 – 343 is the odd one out