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B.Com Semester III Internal Examination 2020 Business Mathematics and Statistics(MCQ Type)
Date of Exam: 02.03.21 Time: 12.30 p.m to 1.30 p.m
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1. If A = {2, 3}, B = {1, 3} C = {3, 4}. Find A x (B ∪ C)
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1 point
a) {(2, 1), (2, 3), (2,4), (3,1), (3,3), (3, 4)}
b) {(2,1), (2,3), (2, 4)}
c) {(3,1), (3,3), (3,4)}
d) {(2,4), (3,3),(3,4)}
2. In what time will a sum of money double itself at 5% p.a. compound interest?
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1 point
a) 15.5
b) 14.2
c) 13.6
d) none
3. log 1 + log 2 + log 3=log x , then x is
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1 point
a) 5
b) 3
c) 9
d) 6
4. In how many ways 10 different beads be placed in a necklace?
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1 point
a) 5!
b) 10!/2
c) 9!/2
d) none
5. The number of terms of (1+x)^11 is
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1 point
a) 13
b) 12
c) 11
d) none
6. If N = 10 and ∑D^2 = 30, then Spearman’s rank correlation coefficient (R) is
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1 point
a) 0.82
b) 0.76
c) 0.57
d) 0.91
7. Which of the following cannot be the probability or occurrence of an event?
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1 point
a) 1/2
b) 2/3
c) 4/3
d) 3/4
8. The geometric mean of Laspaeyres’ price index and paasche’s index is known as
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1 point
a) Kelly’s price index
b) Fisher’s price index
c) Bowley’s price index
d) Walsh’s price index
9. State which one of the following is true :
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1 point
a) There are five components of a time series
b) There are three components of a time series
c) There are four components of a time series
d) None of these
10. Which of the following formula obeys time reversal and factor reversal tests?
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1 point
a) Fisher’s index
b) Laspeyres’ index
c) Paasche,s index
d) Fisher’s and Paasche’s index
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