A bag contains 5 black, 4 white and x red marbles. If the probability of picking a red marble is 2/3, find the value of x
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2006
If the mean of five consecutive integers is 30, find the largest of the numbers
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2006
A final examination requires that a student answer any 4 out of 6 questions. In how many ways can this be done?
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2006
The table above shows the scores of a group of students in a physics test. If the mode is m and the number of students who scored 4 or more is n, what is (n, m)?
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2006
The response of 160 pupils in a school asked to indicate their favourite subjects is given in the bar chart above. What percentage of the pupils have English English and Health education as the their favourite subjects?
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2006
The pie chart above shows the expenditure of a family whose income is N30.000. If the expenditure on food is twice that on housing and that on school fees is twice that on transport, how much does the family spend on foo…
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2006
The solution set of the shaded area above is
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2006
In the diagram given PQ = 10cm, PS = 8cm and < PSR is 60 while < SRQ is a right angle. Find SR
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2006
In the parallelogram PQRS given, find angle < SQR
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2006
In the diagram above, |QR| is the diameter of the semicircle QR. Find the area of the figure to the nearest whole number. {\(\pi = \frac{22}{7}\)}
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2006
What must be added to 4x2 - 4 to make it a perfect square?
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2006
Find the roots of x3 - 2x2 - 5x + 6 = 0
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2006
If y = x2 - x - 12, find the range of values of x for which y \(\geq\) 0,
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2006
If x = \(\begin{vmatrix} 1 & 0 & 1 \\ 2 & -1 & 0 \\ -1 & 0 & 1\end{vmatrix}\) and y = \(\begin{vmatrix} -1 & 1 & 2 \\ 0 & -1 & -1 \\ 2 & 0 & 1\end{vmatrix}\) find 2x - y
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2006
The sum of the first n positive integers is
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2006
If T = 2\(\pi\) \(\sqrt{\frac{L}{g}}\), make g the subject of the formula
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2006
a binary operation \(\oplus\) o the set of rational numbers is defined as x \(\oplus\) y = \(\frac{x^2 - y^2}{2xy}\). Find -5 \(\oplus\) 3
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2006
If p varies inversely as the cube of q and q varies directly as the square of r, what is the relationship between P and r?
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2006
The binary operation \(\oplus\) defined on the set of real numbers is such that x \(\oplus\) y = \(\frac{xy}{6}\) for all x, y \(\epsilon\) R. Find the inverse of 20 under this operation when the identity element is 6