Question

Find the 7th term of the end of the A.P:7,10,13,184.

Answer 1

Answer:

d= 10-7=3

a7 =a+6d

=7+6×3

=7+18

=25

Answer 2

Answer:

166

Step-by-step explanation:

for finding the term from the end the A.P. becomes

184,181,178,-----13,10,7

Now,

a1= 184 a2= 181

d=a2-a1

= 181-184= -3

a7=a+(n-1)d

=184+(7-1)(-3)

=184+6(-3)

=184-18

=166