OAU Mathematics 2021/2022 Past Questions

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In an examination 18 candidates passed Mathematics, 17 candidates passed Physics, 11 candidates passed both subjects and one candidate failed both subjects. Find the number of candidates that passed Mathematics only.

A.6
B.7
C.2
D.3

What is the equation of the line which passes through the points (2,5) and (5,1)?

A.Y = 3x + 4
B.y = 2x - 9
C.3y + 4x = 23
D.Y - 2x -9 = 0

The graph of f(x) = x² - 5x + 6 crosses the x-axis at the points.

A.( -6,0), (-1,0)
B.(-3,0), (-2,0)
C.( -6,0),(1,0)
D.(2,0),(3,0)

Three balls are drawn one after the other, without replacement from a bag containing 4 blue, 6 white and 1 red identical balls. The probability of picking 2 blue and 1 red ball.

A.225
B.8/373
C.6/91
D.2/55

The numbers 3, 2, 8, 5, 7, 12, 9 and 14 are the marks scored by a group of students in a class test. If P is the mean and Q is the median, then P+Q is

A.18
B.17 1/2
C.16
D.15

Find the slope of the curve y=2x² + 5x - 3 at (1, 4)

A.9
B.7
C.6
D.4

The turning point on the curve y =3x² - 9x + 12 is

A.maximum at x= -1.5
B.minimum at x =1.5
C.maximum at x=1.5
D.minimum at x=-1.5

Integrate.${1-x}/{x^3}$ with respect to x

A.(x-x²)/dx²
B.4/x² - 3/x³
C.1/x + 1/2x² + k
D.1/x - 1/2x² +k
E.1/x - 1/2x² +k

In a school, 220 students offer Biology or Mathematics or both, 125 offer Biology and 110 Mathematics. How many offer Biology but not Mathematics?

A.95
B.80
C.125
D.110
E.120

The mean of the numbers 3, 6, 4, x and 7 is 5. Find the standard deviation.

A.√2
B.√3
C.2
D.3
E.5