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 291: Factory P produces 20,000 bags of cement per day while factory Q produces 15,000 bags per day. If P reduces production by 5% and Q increases production by 5%, determine the effective loss in the number of bags produced per day by the two factories
Options:
A) 250
B) 750
C) 1000
D) 1250
Show Answer
The correct answer is A .
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Question 292:
In the diagram, QTR is a straight line and < PQT = 30. find the sin of < PTR
Options:
A)
B)
C)
D)
Show Answer
The correct answer is C .
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Question 293: Find the standard deviation of 5, 4, 3, 2, 1
Options:
A)
B)
C)
D)
Show Answer
The correct answer is A .
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Question 294:
The bar chart above shows the allotment of time(in minutes) per week for selected subjects in a certain school. What is the total time allocated to the six subjects per week?
Options:
A) 460mins
B) 720mins
C) 960mins
D) 200mins
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The correct answer is B .
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Question 295: The mean age of a group of students is 15 years. When the age of a teacher, 45 years old, is added to the age of the students, the mean of their ages becomes 18 years. Find the number of the students in the group
Options:
A) 9
B) 7
C) 42
D) 15
Show Answer
The correct answer is A .
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Question 296: Simplify
Options:
A) 3.6 x 102
B) 3.6 x 10-2
C) 3.6 x 10-3
D) 3.6 x 10-4
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The correct answer is C .
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Question 297: Find correct to one decimal place, 0.24633 0.0306
Options:
A) 0.8
B) 1.8
C) 8.0
D) 8.1
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The correct answer is D .
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Question 298: A chord drawn 5 cm away from the center of a circle of radius 13 cm. Calculate the length of the chord
Options:
A) 7cm
B) 9cm
C) 12cm
D) 24cm
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The correct answer is D .
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Question 299:
The probabilities that John and James pass an examination are and respectively. Find the probability of both boys failing the examination.
Options:
A)
B)
C)
D)
Show Answer
The correct answer is D .
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Question 300:
An unbiased die is rolled 100 times and the outcome is tabulated above.
What is the probability of obtaining a 5?
Options:
A) 1/5
B) 1/2
C) 1/6
D) 1/4
Show Answer
The correct answer is A .