Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.
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Question 181: If P = 18, Q = 21, R = -6 and S = -4, Calculate + S2
Options:
A)
B)
C)
D)
Show Answer
The correct answer is B .
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Question 182: 3% of a family's income is spent on electricity, 58% on food, 20% on transport, 11% on education and 7% on extended family. The angles subtended at the centre of the pie chart under education and food are respectively
Options:
A) 76.8o and 25.2o
B) 10.8o and 224.6o
C) 112.4o and 72.0o
D) 39.6o and 212.4o
Show Answer
The correct answer is D .
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Question 183:
TP and TQ are tangents to a circle centre 0 and r is a point on the circumference of the circle as shown in the figure. If angle PTQ = 45, what is the magnitude of the angle PRO?
Options:
A) 45
B) 135
C) 40
D) 76
E) 52
Show Answer
The correct answer is D .
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Question 184: The sum of the first three terms of a geometric progression is half its sum to infinity. Find the positive common ratio of the progression.
Options:
A)
B)
C)
D)
Show Answer
The correct answer is B .
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Question 185:
The angle of a sector of a circle radius 10.5 cm is 48. Calculate the perimeter of the sector.
Options:
A) 25.4cm
B) 25.4cm
C) 25.6cm
D) 29.8cm
Show Answer
The correct answer is D .
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Question 186:
The bar chart shows the distribution of marks in a class test. How many students took the test?
Options:
A) 17
B) 20
C) 25
D) 30
Show Answer
The correct answer is A .
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Question 187: If b = a + cp and r = ab + cp2, express b2 in terms of a, c, r.
Options:
A) b2 = aV + 2cr
B) b2 = ar + 2c2r
C) b2 = a2 = cr2
D) b2 = ar2 + c
E) b2 = 2cr - a2
Show Answer
The correct answer is E .
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Question 188: W L2 and W = 6 when L = 4. If L = , find W.
Options:
A) 6
B)
C)
D)
Show Answer
The correct answer is A .
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Question 189: A predator moves in a circle of radius √2 centre (0,0), while a prey moves along the line y = x. If 0 x 2, at which point(s) will they meet?
Options:
A) (1,1) only
B) (1,1) and (1,2)
C) (0,0) and (1,1)
D) (√2,√2) only
Show Answer
The correct answer is A .
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Question 190: A bowl is designed by revolving completely the area enclosed by y = x2 - 1, y = 3 and x ≥ 0 around the axis. What is the volume of this bowl?
Options:
A) 7π cubic units
B) 15π/2 cubic units
C) 8π cubic units
D) 17π/2 cubic units
Show Answer
The correct answer is B .