Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.

19 : 23 :: 11 : 13 :: 7 : ?

11

19 : 23 :: 11 : 13 :: 7 : ?

Logic here is :

Prime Number : Next Prime No. of !st prime no .

We have ,

19 : 23

19 is prime number , so next prime number of 19 is 23 .

&  11 : 13

11 is prime number , so next prime number of 11 is 13 .

Similarly ,

7 : ?

7 is prime number and next prime number of 7 is 11 .

Hence , 11 is correct answer .