Question

16. Which term of the A.P. 3, 10, 17, ......... will
be 84 more than its 13th term ?​

Answer 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

Step-by-step explanation:

Given A.P. is 3, 10, 17....

Here, a = 3

d = 10 – 3 = 7

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:

This is an A.P with first term a= 3 and common difference d =7

Its 13th term is = a+ 12d = 3+ 12(7) =3+84 = 87

84 more than 13th term is = 87 + 84 =171

Let 171 be nth term of the A.P

171 =a+(n-1)d

171= 3+(n-1)(7)

(n-1)=168/7 = 24

n=24+1=25

Therefore 171 is the 25th term of the A.P