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.
-
Question 421:
Two binary operations and are defines as m n = mn - n - 1 and m n = mn + n - 2 for all real numbers m, n.
Find the value of 3 (4 50)
Options:
A) 60
B) 57
C) 54
D) 42
Show Answer
The correct answer is C .
-
Question 422: Find the sum of the first 18 terms of the series 3, 6, 9,..., 36.
Options:
A) 505
B) 513
C) 433
D) 635
Show Answer
The correct answer is B .
-
Question 423:
In the diagram, the base diameter is 14cm while the height is 12cm. Calculate the total surface area if the cylinder has both a base and a top.[]
Options:
A) 836cm2
B) 308cm2
C) 528cm2
D) 154cm2
Show Answer
The correct answer is A .
-
Question 424: If x4 - kx3 + 10x2 + 1x - 3 is divisible by (x - 1), and if when it is divided by (x + 2) the remainder is 27, find the constants k and 1
Options:
A) k = -7, 1 = -15
B) k = -15, 1 = -7
C) k = , 1 = -7
D) k = , 1 = -17
Show Answer
The correct answer is A .
-
Question 425: If log3x2 = -8, what is x?
Options:
A)
B)
C)
D)
Show Answer
The correct answer is D .
-
Question 426: A sector of a circle of radius 7.2cm which subtends an angle of 300 at the centre is used to form a cone. What is the radius of the base of the cone?
Options:
A) 6cm
B) 7cm
C) 8cm
D) 9cm
E) 5cm
Show Answer
The correct answer is A .
-
Question 427:
The equation of the line in the graph is
Options:
A) 3y = 3x + 12
B) 3y = 3x + 12
C) 3y = -4x + 12
D) 3y = -4x + 9
Show Answer
The correct answer is C .
-
Question 428: What is the locus of points equidistant from the lines ax + bc + c = 0?
Options:
A) A line bx - ay +q = 0
B) A line ax - ay +q = 0
C) A line bx + ay +q = 0
D) A line bx + ay +q = 0
Show Answer
The correct answer is B .
-
Question 429: In a school, 220 students offer Biology or Mathematics or both. 125 offer Biology and 110 mathematics. How many offer Biology but not Mathematics?
Options:
A) 95
B) 80
C) 125
D) 110
Show Answer
The correct answer is D .
-
Question 430: One bag contain 3 blue and 5 red balls, another bag contain 2 blue and 4 red balls respectively. One ball is drawn for each bag. What is the probability both balls are blue
Options:
A)
B)
C)
D)
Show Answer
The correct answer is D .