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Find the middle term of the AP 6, 10, 14, …, 86.

Class 10Properties and Selection of AP TermsAlgebra — Sequences

A42
B46
C50
D44

Step-by-Step Solution

n = (86 - 6) /4 + 1 = 21

terms, so the middle term is the 11th:

6 + 10 \times 4 = 46

. It also equals (6 + 86)/2.

Answer: B) 46

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