By QB365 on 14 Jun, 2021
QB365 provides detailed and simple solution for every book back questions in class 9 Maths subject.It will helps to get more idea about question pattern in every book back questions with solution.
9th Standard
Maths
1 Marks
The set P = {x | x ∈ Z , –1 < x < 1} is a –––––––––.
Singleton set
Power set
Null set
Subset
If B ⊆ A then n(A∩B) is –––––––––.
n(A – B)
n(B)
n(B – A)
n(A)
If X = {x : x = 4(n – 1), n ∈ N} and Y = {y : y = 3n – 2n – 1, n ∈ N}, then X∪Y is ______________
W
X
Y
N
In a class of 50 boys, 35 boys play Carrom and 20 boys play Chess then the number of boys play both games is________.
5
30
15
10
If J = Set of three sided shapes, K = Set of shapes with two equal sides and L = Set of shapes with right angle, then J ∩ K ⋂ L is ________.
Set of isoceles triangles
Set of equilateral triangles
Set of isoceles right triangles
Set of right angled triangles
The shaded region in the Venn diagram is ________.
Z-(XUY)
(XUY)⋂Z
Z-(X⋂Y)
ZU(X∩Y)
Which one of the following, regarding sum of two irrational numbers, is true?
always an irrational number
may be a rational or irrational number
always a rational number
always an integer.
Which one of the following has a terminating decimal expansion?
\(\frac { 5 }{ 64 } \)
\(\frac { 8 }{ 9 } \)
\(\frac { 14 }{ 15 } \)
\(\frac { 1 }{ 12 } \)
Which one of the following is an irrational number.
\(\sqrt { 25 } \)
\(\sqrt { \frac { 9 }{ 4 } } \)
\(\frac { 7 }{ 11 } \)
\(\pi\)
The smallest rational number by which \(\frac { 1 }{ 3 } \) should be multiplied so that its decimal expansion terminates after one place of decimal is ________.
\(\frac { 1 }{ 10 } \)
\(\frac { 3 }{ 10 } \)
3
30
Find the odd one out of the following.
\(\sqrt { 32 } \times \sqrt { 2 } \)
\(\frac { \sqrt { 27 } }{ \sqrt { 3 } } \)
\(\sqrt { 72 } \times \sqrt { 8 } \)
\(\frac { \sqrt { 54 } }{ \sqrt { 18 } } \)
When (2\(\sqrt{5}\)-\(\sqrt{2}\))2 is simplified, we get ________.
4\(\sqrt{5}\)+2\(\sqrt{2}\)
22-4\(\sqrt{10}\)
8-4\(\sqrt{10}\)
2\(\sqrt{10}\)-2
The Auto fare is found as minimum Rs. 25 for 3 kilometer and thereafter Rs. 12 for per kilometer. Which of the following equations represents the relationship between the total cost ‘c’ in rupees and the number of kilometers n?
c = 25 + n
c = 25 + 12n
c = 25 + (n–3)12
c = (n–3)12
Degree of the polynomial (y3–2)(y3 + 1) is _______.
9
2
3
6
If (x + 5) and (x - 3) are the factors of ax2+bx+c, then values of a, b and c are _______.
1, 2, 3
1, 2,15
1, 2, −15
1, −2,15
Cubic polynomial may have maximum of ________ linear factors.
1
2
3
4
If \(\frac { { a }_{ 1 } }{ { a }_{ 2 } } \neq \frac { { b }_{ 1 } }{ { b }_{ 2 } } \) where a1x + b1y + c1 = 0 and a2x + b2 y + c2 = 0 then the given pair of linear equation has _______ solution(s)
no solution
two solutions
unique
infinite
The correct statement out of the following is ________.
ΔABC ≅ ΔDEF
ΔABC ≅ ΔDEF
ΔABC ≅ ΔFDE
ΔABC ≅ ΔFED
The interior angle made by the side in a parallelogram is 90° then the parallelogram is a ________.
rhombus
rectangle
trapezium
kite
If one angle of a cyclic quadrilateral is 75° , then the opposite angle is ________.
100°
105°
85°
90°
In the given figure, If OP = 17cm PQ = 30, cm and OS is perpendicular to PQ, then RS is ________.
10 cm
6 cm
7 cm
9 cm
The points (–5, 2) and (2, –5) lie in the ________.
same quadrant
II and III quadrant respectively
II and IV quadrant respectively
IV and II quadrant respectively
The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is _______.
24
36
26
34
The area of a triangle whose sides are a, b and c is ________
\(\sqrt { \left( s-a \right) \left( s-b \right) \left( s-c \right) } \)sq. units
\(\sqrt { s\left( s-a \right) \left( s-b \right) \left( s-c \right) } \)sq. units
\(\sqrt { s\left( s\times a \right) \left( s\times b \right) \left( s\times c \right) } \)sq. units
\(\sqrt { s\left( s-a \right) \left( s-b \right) \left( s-c \right) } \) sq. units
A number between 0 and 1 that is used to measure uncertainty is called _______.
Random variable
Trial
Simple event
Probability