Question

If an = 3n - 2 then a5 is

Answer 1

Answer:

13

Step-by-step explanation:

a5 = 3×5 -2

= 13

answer is 13

Answer 2

Step-by-step explanation:

Since an=3n-2,

So when we put

n=1 then, 3×1-2=1

n=2 then, 3×2-2=4

n=3 then, 3×3-2=7

n=4 then, 3×4-2=10

So, AP is,

1,4,7,10

First term (a)=1, Common difference (d)=4-1=3 OR 7-4=3

SO,

a5= a+(n-1)d

=1+(5-1)3

=1+15-3

=1+12

=13

Hence, fifth term (a5) of an AP is 13