Question

13,15,?,19,?,23
number seires​

Answer 1

Answer:

17 , 21

Because this is a series of odd numbers

Answer 2

Answer:

17, 21

Step-by-step explanation:

AP:13,15,?,19,?,23............

a=13 , d=15-13=2

a3=a + 2d = 13 + 2*2 = 13 + 4 = 17

a5=a + 4d = 13 + 4*2 = 13 + 8 = 21

hope this is helpful:)