Question

if for an A.P tn = 3n-2 then the common difference (d) =?
A) 5
B)2
C)3
D)4

Answer 1

Sub n=1 s1=3(1)-2=1
sub n=2 s2=3(2)-1=5
s1=a1 ,s2=a+d
5=1+d
d=5-1
=4

Option d.

Answer 2

Option c ,d=3, d =t2-t1=4-1=3

Step-by-step explanation: