Math, asked by nithya32, 2 months ago

id 2k+1 4k+3 and 8k+1 are three consecutive terms of an ap find the value of k and 18 th term of the sequence​

Answers

Answered by Anonymous
2

Answer:

Let, a = 2k + 1, b = 4k + 3 & c = 8k + 1

» 2b = a + c

» 8k + 6 = 2k + 1 + 8k + 1

» 2k = 4

» k = 2

Therefore, k = 2

» t1 = 5 & t2 = 11

» d = 6

» t18 = a + 17d

= 5 + 102 = 107

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