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2. Sequences and series of real numbers
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Q9 of 110 Page 65

If k + 2, 4k–6, 3k–2 are the three consecutive terms of an A.P, then the value of k is

From AP, it is clear that


(4k-6)-(k + 2) = (3k-2)-(4k-6)


3k-8 = -k + 4


4k = 12 or k = 3.


So the correct choice is B.

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If a1, a2 , a3,...are in A.P. such that , then the 13th term of the A.P. is

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If a, b, c, l, m. n are in A.P., then 3a + 7, 3b + 7, 3c + 7, 3l + 7, 3m + 7, 3n + 7 form

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Questions · 110
2. Sequences and series of real numbers
1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 1 1 1 1 1 1 2 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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