2.Nth Term of Arithmetic Progression

Nth term of AP 

a+(n-1) d

Where a. is first term d is common difference and n is number of terms 

Que find 5th term for series

2,4,6,8.......

a= 2.    d=4-2=2.   n = 5

T(5) = 2+(5-1)2

         = 2+4×2

         = 2+8=10