Question

an arthematic sequence 15 terms. what is the position of middle term in order line of terms​

Answer 1

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Your example is an arithmetic sequence so there is some number d that you add to each term to obtain the next term. The middle term of a 15 term sequence is 92 so this is the 8th term. The last term is 7 terms further along in the sequence so it is 92 + 7d.......☺

Answer 2

Your example is an arithmetic sequence so there is some number d that you add to each term to obtain the next term. The middle term of a 15 term sequence is 92 so this is the 8th term. The last term is 7 terms further along in the sequence so it is 92 + 7d. Likewise the first term is 7 terms before the 8th term so it is 92 - 7d. Thus the sum of the first and last term is 92 - 7d + 92 + 7d = 92 + 92 = 184.