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.

Four number-pairs are given out of which three are alike in a certain

1.	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.
A.	5 : 7
B.	17 : 23
C.	13 : 19
D.	31 : 41
Answer» B. 17 : 23