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2009 - JAMB Mathematics Past Questions and Answers - page 9

81

What value of x will make the function x(4 - x) a maximum?

A
4
B
3
C
2
D
1
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82

The distance travelled by a particle from a fixed point is given as s = (t3 - t2 - t + 5)cm. Find the minimum distance that the particle can cover from the fixed point.

A
2.3 cm
B
4.0cm
C
5.2
D
g
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83

Evaluate (\int) sec2(\theta) d (\theta)

A
sec\(\theta\) tan\(\theta\) + k
B
tan\(\theta\) + k
C
2 sec\(\theta\) + k
D
sec\(\theta\) + k
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84

(\begin{array}{c|c} No. of days & 1 & 2 & 3 & 4 & 5 & 6\ \hline No. of students & 20 & 2x & 60 & 40 & x & 50 \end{array})

The distribution above shows the number of days a group of 260 students were absent from school in a particular term. How many students were absent for at least four days in the term

A
180
B
120
C
110
D
40
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85

5, 8, 6 and k occurs with frequencies 3, 2, 4 and 1 respectively and have a mean of 5.7. Find the value of k

A
4
B
3
C
2
D
1
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86

What is the mean deviation of x, 2x, x + 1 and 3x, if their mean is 2?

A
0.5
B
1.0
C
1.5
D
2.0
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87

in how many ways can 9 people be seated if 3 chairs 3 chairs are available

A
720
B
504
C
336
D
210
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88

In how many ways can a delegation of 3 be chosen from 5 men and 3 women, if at least 1 man and 1 woman must be included?

A
15
B
28
C
30
D
45
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89

The probability of a student passing any examination is (\frac{2}{3}). If the student takes three examinations, what is the probability that he will not pass any of them?

A
\(\frac{2}{3}\)
B
\(\frac{4}{9}\)
C
\(\frac{8}{27}\)
D
\(\frac{1}{27}\)
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90

(\begin{array}{c|c} Marks & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9\ \hline No. of students & 3 & 4 & 1 & 0 & 4 & 5 & 2 & 1\end{array})

The table above shows the distribution of marks of students in a test. Find the probability of passing the test if the pass mark is 5.

A
\(\frac{3}{5}\)
B
\(\frac{2}{5}\)
C
\(\frac{7}{20}\)
D
\(\frac{1}{5}\)
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