1. The nth element of the sequence 1, 3, 5, 7,......... is
A) n
B) 2n - 1
C) 2n + 1 ✓
D) none of these
CA Foundation Paper 3
Sequence and Series MCQ
Chapter 6 • 151 Questions from ICAI Study Material
Questions
151
Est. Time
113 min
Source
ICAI Book
Question 1 of 151 0 correct | 0 wrong
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Sample Questions: Sequence and Series
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2. The nth element of the sequence -1, 2, -4, 8 ..... is
A) (-1)^n 2^(n-1) ✓
B) 2^(n-1)
C) 2^n
D) none of these
3. Sum(i=4 to 7) sqrt(2i-1) can be written as
A) sqrt(7) + sqrt(9) + sqrt(11) + sqrt(13)
B) 2sqrt(7) + 2sqrt(9) + 2sqrt(11) + 2sqrt(13) ✓
C) 2sqrt(7) + 2sqrt(9) + 2sqrt(11) + 2sqrt(13)
D) none of these.
4. The sum to infinity of the series -5, 25, -125, 625, ..... can be written as
A) Sum(k=1 to inf) (-5)^k ✓
B) Sum(k=1 to inf) 5^k
C) Sum(k=1 to inf) -5^k
D) none of these
5. The first three terms of sequence when nth term t_n is n^2 - 2n are
A) -1, 0, 3 ✓
B) 1, 0, 2
C) -1, 0, -3
D) none of these
6. Which term of the progression -1, -3, -5, .... is -39
A) 21st
B) 20th ✓
C) 19th
D) none of these
7. The value of x such that 8x + 4, 6x - 2, 2x + 7 will form an AP is
A) 15
B) 2
C) 15/2 ✓
D) none of the these
8. The mth term of an A.P. is n and nth term is m. The rth term of it is
A) m + n + r
B) n + m - 2r
C) m + n + r/2 ✓
D) m + n - r
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