Question
Four number pair have been given, out of which three are
alike in a certain way and one is different. Select the one that is different. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g., 13 - operation 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)Solution
The logic followed here is: Second number = (First number)² - 4. Option 'A': 7 – 45 → 7² - 4 = 49 - 4 = 45 Option 'B': 19 – 357 → 19² - 4 = 361 - 4 = 357 Option 'C': 17 – 285 → 17² - 4 = 289 - 4 = 285 Option 'D': 22 – 480 → 22² - 4 = 484 - 4 = 480
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