Select the option that is related to the fifth number in the same way as the fourth number is related to the third number and the second number is related to the first number.
37 : 43 :: 23 : 31 :: 17 : ?
1
19
2
23
3
21
4
25
Select the option that is related to the fifth number in the same way as the fourth number is related to the third number and the second number is related to the first number.
37 : 43 :: 23 : 31 :: 17 : ?