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Recent questions tagged sets
+2
votes
1
answer
If * and T are two sets such that * has 21 elements, T has 32 elements, and * ∩ T has 11 elements, how many elements does * ∪ T have
asked
Apr 7, 2019
in
Class 11
by
kratos
class-11
sets
+3
votes
1
answer
Find the reciprocal ratio of: (i) 5 : 8 (ii) x/3 ∶ y/7
asked
Apr 6, 2019
in
Mathematics
by
kratos
ratio and proportion
class-11
mathematical reasoning
quadratic equations
class-10
icse
sets
+2
votes
1
answer
If f(x) = cos (log x), then f(1/x) f(1/x) -1/2[f(x/y) + f(xy)] is equal to
asked
Apr 6, 2019
in
JEE
by
kratos
class-11
jee
differential equations
relations and functions
functions
jee mains
sets
+2
votes
1
answer
Let M be the set of men and R is a relation ‘is son of’ defined on M. Then, R is
asked
Apr 6, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
sets
+2
votes
1
answer
Let a relation R be defined by R = {(4,5), (1,4), (4,6) (7,6) (3,7)}, then R^-1 OR is equal to
asked
Apr 5, 2019
in
JEE
by
kratos
class-11
jee
class-9
relations and functions
jee mains
class-12
relations
sets
+2
votes
1
answer
Find the range of each of the following functions: (i) f{x) = 2 - 3x, x ∈ R,x>0
asked
Apr 5, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
class-12
sets
+2
votes
1
answer
If f(x) = in(1 - x/1 + x), prove that f(2x/1 + x^2) = 2f(x).
asked
Apr 5, 2019
in
JEE
by
kratos
relations and functions
jee
jee mains
sets
+1
vote
1
answer
Question 6: From the sets given below, select equal sets:
asked
Apr 4, 2019
in
Class 11
by
kratos
class-11
sets
+3
votes
1
answer
If in a group of 850 persons, 600 can speak Hindi and 340 can speak Tamil. Then, the number of persons can speak both Hindi and Tamil is
asked
Apr 4, 2019
in
JEE
by
kratos
analytical & logical reasoning
class-11
jee
mental ability
relations and functions
jee mains
sets
+3
votes
1
answer
The relation R defined on the set of natural numbers as {(a, b) : a differs from b by 3} is given by
asked
Apr 3, 2019
in
JEE
by
kratos
relations and functions
jee
jee mains
sets
+2
votes
1
answer
If X = {a, b, c, d} and Y = {f, b, d, g}, find (i) X – Y (ii) Y – X (iii) X ∩ Y
asked
Apr 3, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
sets
+3
votes
1
answer
Given that N = {1, 2, 3, ... , 100}. Then write
asked
Apr 3, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
sets
+3
votes
1
answer
Let N be the set of all natural numbers. If f : N → N defined as f(x) = 2x, ∀ x ∈ N, then f is
asked
Apr 2, 2019
in
JEE
by
kratos
jee
relations and functions
jee mains
class-12
sets
+1
vote
1
answer
What is the number of students who are good in either Hindi or Mathematics but not in English?
asked
Apr 2, 2019
in
Class 12
by
kratos
nda
class-11
class-6
real numbers
class-10
class-12
data handling
sets
+1
vote
1
answer
If α, β, ξ, and η are non-empty sets, then
asked
Apr 1, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
sets
+2
votes
1
answer
Match each of the set on the left in the roster form with the same
asked
Apr 1, 2019
in
Class 11
by
kratos
class-11
sets
+1
vote
1
answer
Let f(x) = (x + 1)^2 -1, x ≥ -1 Statement -1: The set {x:f(x) = f^-1(x)}= {0,-1}
asked
Apr 1, 2019
in
JEE
by
kratos
relations and functions
jee
jee mains
sets
+2
votes
1
answer
Let * = {a, b, c} and T = {1, 2, 3}. Find F^−1 of the following functions F from * to T, if it exists.
asked
Mar 31, 2019
in
JEE
by
kratos
jee
relations and functions
jee mains
class-12
sets
+3
votes
1
answer
What universal set (*) would you propose for each of the following: (i) The set of right triangles.
asked
Mar 30, 2019
in
Class 11
by
kratos
class-11
sets
+2
votes
1
answer
Let R be the real line. Consider the following subsets of the plane R × R :
asked
Mar 29, 2019
in
JEE
by
kratos
class-11
jee
relations and functions
jee mains
sets
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