Sets Practice test -1

Sets

S Practice Test-1

Question 1.
The set of intelligent students in a class .
 a null set
a singleton set
a finite set
Not a well defined collection

Question 2.
Which of the following is not null set?.
 Set of odd natural numbers divisible by 2
Set of even prime numbers
{x:x is a natural number, x<5 and x>7}
{y:y is a point common to any two parallel lines}

Question 3.
Which of the following.is an equivalent set?
 A={a,b,c,d}, B={d,c,b,a}
{4,8,12,6}, B={8,4,16,18}
{x:x is a multiple of 10} B={10,15,20,25,30...}
None of the above

Question 4.
If A= { x:x=4n+1,2≤n≤5} , then number of subsets of A is
 16
15
4
None of these

Question 5.
If A B and are non-empty sets, then P(A)∪P(B) is equal to.
 P(A∪B)
P(A)∩P(B)
P(A)=P(B)
None of these

Question 6.
If P (A) =P (B) then.
 A⊈B
B⊈A
A=B
None of these

Question 7.
In a committee, 50 people speak French, 20 speak Spanish and 10 speak both Spanish and French. The number of people speak atleast one of these two languages is
 150
60
155
None of these

Question 8.
In a class of 60 students, 25 students play Cricket and 20 students play Tennis, and 10 students play both the games. Then, the number of students who play neither is
 0
25
35
45

Question 9.
In a college of 300 students, every student reads 5 newspaper and every newspaper is read by 60 students. The number of newspaper is
 at least 30
at most 20
Exactly 25
None of these

Question 10.
In a survey of 600 students in a school, 150 students were found to be taking tea and 225 taking coffee. 100 were taking both tea and coffee. Find how many students were taking neither tea nor coffee?
 310
320
327
325

Question 11.
If there are three atheletic teams in a school, 21 are in the basketball team, 26 in hockey team and 29 in the football team. 15 play hockey and basketball, 15 play hockey and football, 12 play football and basketball and 8 play all the games. The total number of members is
 42
43
45
None of these

Question 12.
Two finite sets have m and n elements. The number of subsets of the first set is 112 more than that of the second set. The values of m and n are, respectively.
 4,7
7,4
4,4
7,7

Question 13.
There are 100 families in a society, 40 families buy newspaper A, 30 families buy newspaper B, 30 families buy newspaper C, 10 families buy newspaper A and B, 8 families buy newspaper B and C, 5 families buy newspaper A and C, 3 families buy newspaper A, B and C, then the number of families who do not buy any newspaper, is
 20
80
0
None of these

Question 14.
In a survey of 200 students of a school, it was found that 120 study Mathematics, 90 study Physics and 70 study Chemistry, 40 study Mathematics and Physics, 30 study Physics and Chemistry, 50 study Chemistry and Mathematics and 20 none of these subjects. The number of students who study all the three subjects is
 30
20
22
25

Question 15.
If A and B are two given sets, then A ∩(A ∩ B)ᶜ is equal to
 A
B
Φ
A∩Bᶜ

Number of score out of 15 =

Score in percentage =

click here to show and hide the answers 1) Not well defined collection.
2) Set of even prime numbers.
3) {a,b,c,d}, B={d,c,b,a}
4) 16
5) None of these
6) A=B
7) 60.
8) 25
9) Exactly 25
10)325.
11)43.
12) 7,4
13)20
14)20.
15)A ∩ Bᶜ

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