In a class of 40 students, 32 offer mathematics, 24 offer Physics, and 4 offer neither Mathematics nor Physics. How many offer both Mat
ematics and Physics?
A cinema hall contains a certain number of people. If 22\(\frac{1}{2}\)% are children, 47\(\frac{1}{2}\)% are men and 84 are women, find the number of men in the hall.
Απάντηση
(D)
133
9
If \(\frac{9^{2x-1}}{27^{x+1}} = 1\), find the value of x.
Απάντηση
(B)
5
10
The sum of four numbers is 1214\(_5\). What is the average expressed in base five?
Απάντηση
(B)
141
11
Given:
U = {Even numbers between 0 and 30}
P = {Multiples of 6 between 0 and 30}
Q = {Multiples of 4 between 0 and 30}
Find (P∪Q)c
Απάντηση
(A)
{2, 10, 14, 22, 26}
12
x varies directly as the product of u and v and inversely as their sum. If x = 3 when u = 3 and v = 1, what is the value of x if u = 3 and v = 3?
Απάντηση
(C)
6
13
Find the range of the value of x satisfying the inequalities 5 + x \(\leq\) 8 and 13 + x \(\geq\) 7
Απάντηση
(C)
-6 \(\leq\) x \(\leq\) 3
14
The graph of the function y = x\(^2\) + 4 and a straight line PQ are drawn to solve the equation x\(^2\) - 3x + 2 = 0. What is the equation of PQ?
Απάντηση
(B)
y = 3x + 2
15
The length a person can jump is inversely proportional to his weight. If a 20 kg person can jump 1.5 m, find the constant of proportionality
Απάντηση
(B)
30
16
Find the value of x and y respectively if 3x - 5y + 5 = 0 and 4x - 7y + 8 = 0
Απάντηση
(D)
5, 4
17
Three consecutive terms of a geometric progression are given as n-2, n and n+3. Find the common ratio
Απάντηση
(D)
3/2
18
Triangle OPQ above is the solution of the inequalities
Απάντηση
(A)
x + 1 ≥ 0, y + x ≤ 0, y - x ≥ 0
19
Factorize completely 4abx - 2axy -12b2x + 6bxy
Απάντηση
(A)
2x(a - 3b)(2b - y)
20
The sum of the first n terms of an arithmetic progression is 252. If the first term is -16 and the last term is 72, find the number of terms in the series
Απάντηση
(D)
9
21
A trapezium has two parallel sides of length 5cm and 9cm. If the area is 21cm2, find the distance between the parallel sides
Απάντηση
(A)
3 cm
22
The locus of a point P which moves on one side only of a straight line XY so that ∠XPY = 90o is
Απάντηση
(B)
a semicircle
23
Find the slope of the curve y = 2x\(^2\) + 5x - 3 at (1, 4).
Απάντηση
(D)
9
24
Evaluate \(\int^{3} _{2}(x^2 - 2x)dx\)
Απάντηση
(C)
4/3
25
If y = 3 sin(-4x), dy/dx is
Απάντηση
(C)
-12 cos (-4x)
26
Determine the maximum value of y = 3x2 - x3
Απάντηση
(C)
4
27
By how much is the mean of 30, 56, 31, 55, 43 and 44 less than the median?
Απάντηση
(C)
0.33
28
The range of 4, 3, 11, 9, 6, 15, 19, 23, 27, 24,21 and 16 is
Απάντηση
(D)
24
29
Find the mean of the distribution above
Απάντηση
(C)
3
30
On a pie chart, there are four sectors of which three angles are 45°, 90° and 135°. If the smallest sector represents N28.00, how much is the largest sector?
Απάντηση
(B)
N84.00
31
If \(^{n}P_{3} - 6(^{n}C_{4}) = 0\), find the value of n.
Απάντηση
(C)
7
32
Find the number of committees of three that can be formed consisting of two men and one woman from four men and three women
Απάντηση
(C)
18
33
A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked?
Απάντηση
(A)
15/28
34
The result of tossing a fair die 120 times is summarized above. Find the value of x
Απάντηση
(B)
20
35
An aeroplane flies due north from airport P to Q and then flies due east R. If Q is equidistant from P and R, find the bearing of P and R
Απάντηση
(C)
225o
36
An arc of a circle subtends an angle of 30° on the circumference of a circle of radius 21cm. Find the length of the arc.
Απάντηση
(B)
22cm
37
Find the equation of the locus of a point P(x,y) which is equidistant from Q(0,0) and R(2,1).
Απάντηση
(A)
4x + 2y = 5
38
In the diagram above, PQ is parallel to RS. What is the value of α + β + γ?
Απάντηση
(A)
360o
39
XYZ is a circle with center O and a radius 7cm. Find the area of the shaded region.
Απάντηση
(D)
14cm2
40
In the diagram above, PQR is a straight line and PS is a tangent to the circle QRS with /PS/ = /SR/ and ∠SPR = 40°. Find ∠PSQ
