Four number-pairs are given out of which three are alike in a certain way and one is different. Select the number-pair that is different from the rest.
Answer & explanation
Correct answer: option 1
Except option 1 ,others are following the particular pattern
5 : 7 - Both are the Consecutive prime number.(odd)
17 : 23 - Both are not the Consecutive prime number there are 19 in the middle
13 : 19 - Both are not the Consecutive prime number there are 17 in the middle
31 : 41 - Both are not the Consecutive prime number there are 37 in the middle