Question

Given A.P is 12, 16, 20, 24,.... Find the 24th term of progression

Answer 1

a= 12, d= 4 and n= 24

24rth term = a+(n-1)d

= 12+(24-1)4

= 12+23×4 = 104

Answer 2

a1= 12 a2= 16 d= a2-a1=4

a24= a+23d
= 12+23×4
=12+92
a24=104