Question

find the24th term of an A.P.
12,16,20,24...​

Answer 1

Answer:

Explanation:

The A.P. 12,16,20,24

Here a=12,d=16−12=4,t  

24

​  

=?

t  

n

​  

=a+(n−1)d

∴t  

24

​  

=12+(24−1)4  (∵n=24)

=12+23×4

=12+92

∴t  

24

​  

=104

Thus 24  

th

 term of the A.P. is 104.

Answer 2

The A.P. 12,16,20,24

Here a=12,d=16−12=4,t  

24

​  

=?

t  

n

​  

=a+(n−1)d

∴t  

24

​  

=12+(24−1)4  (∵n=24)

=12+23×4

=12+92

∴t   24 =104

Thus 24th  term of the A.P. is 104.