Question

Which term of the AP, 4, 11, 18.... will be
84 more than 13th term?​

Answer 1

1 Answer. Let the term which is 84 more than its 13th term be am. Thus, the required term is 25th term of the given A.P.

Answer 2

Answer:

25th term

Step-by-step explanation:

a = 4

d = 7 ,

13th term will be ,

xa13 = a + 12d

a13 = 4 + 12×7

a13 = 4+ 84 = 88

Since , 84 more than its 13th term ,so ,

value of term will be = 88 + 84 = 172

So value of term is 172

Now using ,

an = a+(n-1)d

172 = 4 + 7n - 7

172 + 3 = 7n

175/7 = n

n = 25 ,

So 25th term will be 84 more than its 13th term ,