Question

2 5 8 11 find the 20th term of an ap​

Answer 1

Answer:

a=2 d=5-2=3 a20=?

Step-by-step explanation:

a20=a+19d

a20=2+19×3

=2+57

=59.

Answer 2

Answer:

59

Step-by-step explanation:

a = 2

d = a2 - A1

= 5 - 2

= 3

n = 20

an = ?

an = a + ( n - 1 ) d

a20 = 2 + ( 20 - 1 ) 3

= 2 + ( 19 ) 3

= 2 + 57

= 59

a20 = 59