Mathematics Past Questions

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Past Questions

1,853 questions
Question 1 of 20 1,853 total questions
Question 611
waec 2001

If N varies directly as M and N = 8 when M = 20 find M when N = 7

A13
B15
C\(17\frac{1}{2}\)
D\(18\frac{1}{2}\)
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Question 612
waec 2001

In a class of 80 students, every students studies Economics or Geography or both. If 65 students study Economics and 50 study Geography, how many study both subjects?

A15
B30
C35
D45
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Question 613
waec 2001

Evaluate \(log_{10}5 + log_{10}20\)

A2
B3
C4
D5
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Question 614
waec 2001

Evaluate \((20_{three})^2 - (11_{three})^2\) in base three

A101
B121
C202
D2020
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Question 615
waec 2001

Which of the following correctly expresses 48 as a product of prime factors?

A3 x 4 x 4
B2 x 3 x 8
C2 x 2 x 2 x 3 x 4
D2 x 2 x 2 x 2 x 3
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Question 616
waec 2000

If the simple interest on N2000 after 9 months is N60, at what rate per annum is the interest charged?

A\(2\frac{1}{4}\)%
B4%
C5%
D6%
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Question 617
waec 2000

Solve the equation 3 + 5x - 2x\(^2\) = 0

A\(-\frac{1}{2},-3\)
B2, 3
C-2, 3
D\(-\frac{1}{2},3\)
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Question 618
waec 2000

Find the volume (in cm\(^3\)) of the solid shown above

A100cm3
B150cm3
C175cm3
D250cm3
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Question 619
waec 2000

The area of a circle is 38.5cm2. Find its diameter [take \(\pi = \frac{22}{7}\)]

A22cm
B14cm
C7cm
D6cm
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Question 620
waec 2000

In the diagram, |PQ| = |PS| Which of the following statements is true?

A∠QPS = QRS
B|PO| = |RO|
CQR||PS
D∠PQR=∠PSR
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Question 621
waec 2000

The arc of a circle 50 cm long, subtends angle of 75° at the center of the circle. Find correct to 3 significant figures, the radius of the circle. Take \(\pi = \frac{22}{7}\)

A8.74cm
B38.2cm
C61.2cm
D76.4cm
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Question 622
waec 2000

The length of the parallel sides of a trapezium are 5cm and 7cm. If its area is 120cm\(^2\), find the perpendicular distance between the parallel sides

A5.0cm
B6.9cm
C10.0cm
D20.0cm
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Question 623
waec 2000

A tap leaks at the rate of 2cm\(^3\) per seconds. How long will it take the tap to fill a container of 45 liters capacity? (1 liters = 1000cm\(^3\))

A8 hours
B6hr 15min
C4hr 25min
D3hr
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Question 624
waec 2000

The height of a pyramid on square base is 15cm. if the volume is 80cm^3, find the area of the square base.

A8cm2
B9.6cm2
C16cm2
D25cm2
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Question 625
waec 2000

A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many revolutions does it make?[Take \(\pi = \frac{22}{7}\)]

A2.5
B5
C25
D50
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Question 626
waec 2000

In the diagram, PQS is a circle with center O. RST is a tangent at S and ∠SOP = 96o. Find ∠PST

A42o
B48o
C60o
D66o
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Question 627
waec 2000

Given that p varies directly as q while q varies inversely as r, which of the following statements is true?

Ar varies directly as p
Bp varies inversely as r
Cp varies directly as r
Dq varies inversely as p
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Question 628
waec 2000

Find the value of x such that the expression \(\frac{1}{x}+\frac{4}{3x}-\frac{5}{6x}+1\) equals zero

A\(\frac{1}{6}\)
B\(\frac{1}{4}\)
C\(\frac{-3}{2}\)
D\(\frac{-7}{6}\)
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Question 629
waec 2000

Solve the equation \(3y^2\) = 27y

Ay = o or 3
By = 0 or 9
Cy = -3 or 3
Dy = 3 or 9
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Question 630
waec 2000

Make t the subject of formula \(k = m\sqrt{\frac{t-p}{r}}\)

A\(\frac{rk^2 + p}{m^2}\)
B\(\frac{rk^2+pm^2}{m^2}\)
C\(\frac{rk^2-p}{m^2}\)
D\(\frac{rk^2-p^2}{m^2}\)
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