Question

if the 3rd term and 6th term of ap are 7 and 13 find the 20th term​

Answer 1

Answer:

9

Step-by-step explanation:

Answer 2

Answer:

41

Step-by-step explanation:

third term = a + 2d = 7

sixth term = a + 5d = 13

by solving , 3 d = 6

d = 2

so, a = 3

20th term = a + 19 d

= 3 + 19 × 2

= 41