Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 19 : 475.
11: 143 = 11 × (11 + 2) = 143
23 : 575 = 23 × (23 + 2) = 575
19 : 475 = 19 × (19 + 2) = 399 (NOT 475)
17 : 323 = 17 × (17 + 2) = 323