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 591: 7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age of 11 years join the class, what is the average age of the pupils now in the class?
Options:
A) 13 years
B) 12 years 7 months
C) 13 years 5 months
D) 13 years 10 months
E) 11 years
Show Answer
The correct answer is D .
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Question 592: If P is a set of all prime factors of 30 and Q is a set of all factors of 18 less than 10, find P Q
Options:
A) {3}
B) {2,3}
C) {2,3,5}
D) {1,2}
Show Answer
The correct answer is B .
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Question 593: In 1984, Ike was 24 yrs old and his father was 45 yrs old. In what year was Ike exactly half his father's age?
Options:
A) 1981
B) 1979
C) 1982
D) 1978
Show Answer
The correct answer is A .
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Question 594:
Given , find p.
Options:
A) 48°
B) 58°
C) 32°
D) 52°
Show Answer
The correct answer is C .
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Question 595:
Find the area of the trapezium above.
Options:
A) 91 cm2
B) 78 cm2
C) 60 cm2
D) 19 cm2
Show Answer
The correct answer is C .
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Question 596: Multiply (3x + 5y + 4z) by (2x - 3y + z)
Options:
A) 6x2 + xy - 15y2 + 4z2 + 11xz - 7yz
B) 6x2 + 3xy - 15y2 + 4z2
C) 6x2 + 3xy - y2 + 4z2
D) 6x2 + 3xy - 15y + z2
Show Answer
The correct answer is A .
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Question 597:
The graph above shows the cumulative frequency curve of the distribution of marks in a class test. What percentage of the students scored more than 20 marks?
Options:
A) 68%
B) 28%
C) 17%
D) 8%
Show Answer
The correct answer is B .
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Question 598: The binary operation on the set of real numbers is defined by m*n = for all m, n R. If the identity element is 2, find the inverse of -5
Options:
A)
B)
C) 4
D) 5
Show Answer
The correct answer is A .
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Question 599: Evaluate 21.05347 - 1.6324 x 0.43 to 3 decimal places
Options:
A) 20.980
B) 20.351
C) 20.981
D) 20.352
Show Answer
The correct answer is D .
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Question 600: The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm3, then the volume of the other block is
Options:
A) 234.00 cm3
B) 526.50 cm3
C) 166.00 cm3
D) 687cm3
Show Answer
The correct answer is A .