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: A
Explanation
The correct answer is option 1. i.e. (7 – 343 – 331).
The logic used here is: (1st number)3 = 2nd number, 2nd number - 10 = 3rd number
Option 1: (7 – 343 – 331): 73 = 343; 343 - 10 = 333, This does not follow the logic.