Question

Find the 8th term from the end of the ap 7 10 13 dotdotdot 184

Answer 1

Answer:

Here !!

first term is 7 say "a"

and last term is 184 say "an"

if the no. of terms are n

D ( common difference) = 13-10 = 10-7 => 3

Now we have to find the 8th last term so it will be easier for us if we will reverse the AP

=> 184,181, ..........13,1 0,7

now D = -3 and a = 184

an = 7

Now we have to find 8th term :-

use an = a+(n-1)d

just plug in the values....

a8 = 184 + (8-1)×-3

a8 = 184 -21

a8 = 163

Answer 2

Step-by-step explanation:

ap=7,10,13 ................184

a=7

d=a2-a1= 10-7=3

n=8

an=a+(n-1)d

= 7+(8-1)3

=7+(7)3

=7+21

=28