Question

if seven times the 7th term of an A.p is =11 times is 11 term find its 8th term?​

Answer 1

Answer:

-10d

.

Step-by-step explanation:

B/Q

7 × t7 = 11 × t11

=> 7 (a+6d) = 11 (a+10d)

=> 7a + 42d = 11a + 110d

=> 42d - 110d = 11a - 7a

=> -68d = 4a

=> -17d = a

.

Now,

t8 = a + 7d

= -17d + 7d

= -10d

.

You can also express it in terms of "a"