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Topic: Sequences & Series :Important Questions Answers/ MCQ's Tests, Quiz, Practise tes  (Read 1641 times)
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« on: February 05, 2011, 09:52:08 AM »


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Sequences & Series :Important Questions Answers/ MCQ's Tests, Quiz, Practise tests, Mock papers, Revision Tests and for other exams:

1. The general term of the sequence 2/1, 3/2, 4/3, …. is an =
1. (n+1)/n
2. n/(n+1)
3. n/(n-1)
4. (n-1)/n
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2. If a, a+d, a+2d, …… is A.P, then an =
1. a + nd
2. a – nd
3. a + (n – 1)d
4. a + (n + 1)d
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3. If A,. G, H are A.M, G.M, and H.M between two numbers, then
1. A < G < H
2. A < G > H
3. A > G > H
4. A > G < H
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4. Which of the following series is convergent.
1. 2 – 6 + 18 - ……
2. 8 + 4 + 2 + …….
3. 5 + 10 + 20 + …….
4. 3/2 + 3 + 6 + ……..
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5. The two arithmetic means between 5 and 35 are
1. 15, 25
2. 10, 20
3. 10, 15
4. 10, 25
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6. If 2b – 1, 4b + 1, 15b – 3 is a geometric series, then b =
1. 4
2. 3
3. 2
4. 1
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7. Which of the following is a geometric series?
1. 5, 7, 9, 11, …..
2. 3, 5, 7, 9…….
3. 1, 1/3, 3, 9, …..
4. 9, 3, 1, 1/3, ……
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8. Which of the following is harmonic sequence?
1. 3, 5, 7 ……
2. ½, ¼, 1/8, …..
3. ½, 1/3, ¼ ……
4. 3, 9, 27 …..
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9. A six sided die contains on each of its faces one of the numbers 1, 2, 3, 4, 5, or 6. Once a number is selected for the face, it may not be reused. Thus, each face of the die has a unique number, selected from the numbers 1 through 6. A fair coin has two sides, heads 4 or tails. If the die is rolled and the coin is tossed, one possible outcome is 6T, meaning you rolled a six and tossed a tail. How many different outcomes are possible?
1. 8
2. 10
3. 12
4. 32
5. None of these
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There are 6 outcomes for the die, 2 for the coin. The multiplication principle gives a total of 6 • 2 = 12

10. An infinite geometric series is convergent if
1. |y|<1
2. r > 1
3. r = 1
4. Both B and C are correct
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