If Ax+By+C = 0 and ax+by+c= 0 are perpendicular to each other. Then which one of the following is true?
Anonymous Quiz
23%
Aa - Bb = 0
47%
Aa + Bb = 0
16%
Aa - Bb = 1
14%
Aa + Bb = 1
What is the distance between the given points A(3, -6) and B(1/2, √3/3)?
Anonymous Quiz
12%
√28 units
48%
9.63 units
29%
4.89 units
12%
5.43 units
🔥1
❤1
Which of the following is the measure of an exterior angle of a 10 sided regular polygons?
Anonymous Quiz
10%
144°
14%
72°
63%
36°
13%
180°
If f(x) = x² +px + 1 where f(0) and f(1) have opposite signs so that f has a root in (0,1), then which one of the following number is a possible value p?
Anonymous Quiz
11%
A. 2
27%
B. 3
47%
C. -3
15%
D. -2
❤4
Which one of the following statement is true about the graph of f(x)= x² -5x -24?
Anonymous Quiz
11%
The y-intercept of the graph is 24
21%
the graph of f(x) opens downward
55%
The vertex of the graph is (5/2, -121/4)
13%
The domain of the graph is R\{-3,8}
Which of the following pairs of sets are disjoint?
Anonymous Quiz
49%
A= {1, 3, 2} and B = {5, 6, 7, 8}
11%
C = {a, b, c} and D = { a, b, c, d, e}
31%
E = { 1, {1, 2}} and F = {{2, 1}, 1}
9%
P = { 1, 3, 5, ...} and Q = { 2, 3, 5, 7...}
If U = {1, 2, 3, ..., 9} and A= { 2, 6, 8}. Then what is A' ?
Anonymous Quiz
7%
{1, 2, 3, 5, 7, 9}
27%
{6, 8}
27%
{1, 3, 5, 7, 9}
39%
{1, 3, 4, 5, 7, 9}
Suppose A and B are sets such that n(A) = 10, n(B) = 23 and n(A∩B) = 4, then which of the following is equal to n(A∆B)?
Anonymous Quiz
41%
25
23%
9
20%
16
16%
37
❤2
Let A and B be two sets that contain 15 and 17 elements respectively. If A ∩ B contains 10 elements, what is the number of elements in A ∪ B?
Anonymous Quiz
14%
32
22%
12
17%
42
48%
22
Of 100 students, 65 are members of mathematics club and 40 are members of a physics club. If 10 are members of neither club, then how many students are members of both clubs?
Anonymous Quiz
7%
100
25%
105
58%
15
9%
50
❤4👍1
Of 100 staff members of a school, 48 drink coffee, 25 drink both tea and coffee and everyone drinks either coffee or tea. How many stuff members drink tea?
Anonymous Quiz
10%
73
45%
77
26%
52
19%
23
Which of the following statement is incorrect about vectors?
Anonymous Quiz
14%
They have both magnitude and direction.
6%
Arrows are used to represent vectors.
69%
All fundamental physical quantities are vectors.
10%
The length of the arrow can tell us the magnitude of the vector.
A force of 500N is acting on a body upward. What is the resultant of the force?
Anonymous Quiz
12%
0 N
68%
500 N
18%
-500 N
2%
250 N
What is the angle between the two vectors A = 3i - j and B = i - 2j?
Anonymous Quiz
10%
60°
22%
57°
17%
90°
52%
45°
How will two vectors give a maximum resultant?
Anonymous Quiz
62%
When they act in the same direction.
14%
When they act in opposite direction.
19%
When they are perpendicular to each other.
5%
Can not be determined.
What should be the value of t so that the vectors A = (2, 5) and B = (10, t) become perpendicular to each other.
Anonymous Quiz
22%
4
54%
-4
17%
-3
7%
-17
What should be the other component of a 500 N force, if one of its component is 300 N ?
Anonymous Quiz
28%
200 N
12%
600 N
33%
400 N
28%
800 N