Toggle navigation
Remember
Login
Register

I forgot my password
or
G
Login with Google
Exam
Questions
Unanswered
Categories
Ask a Question
×
Close
Welcome to Brainiak community
have a look towards our privacy policy and cookie
Recent questions and answers in Mathematics
+1
vote
1
answer
Let Z be the set of integers. If A = {x ∈ Z : 2(x +2)(x^2  5x + 6) = 1} and B {x ∈ Z : 3 < 2x  1 < 9},
answered
Jul 15
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

29
views
+1
vote
0
answers
The least value of z where z is complex number which satisfies the inequality
asked
Jul 5
in
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
by
Brainiak
(
10.3k
points)

27
views
complexnumberjee2021pyq
+1
vote
0
answers
The area of the triangle with vertices A(z), B(iz) and C (z + iz) is :
asked
Jul 5
in
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
by
Brainiak
(
10.3k
points)

8
views
complexnumberjee2021pyq
0
votes
0
answers
Let S1, S2 and S3 be three sets defined as S1 = {z ∈ C : z  1 ≤ √2}
asked
Jul 5
in
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
by
Brainiak
(
10.3k
points)

14
views
complexnumberjee2021pyq
+1
vote
0
answers
If the equation az^2 + bar (bar α z + α bar z) + d = 0 represents a circle
asked
Jul 5
in
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
by
Brainiak
(
10.3k
points)

8
views
complexnumberjee2021pyq
0
votes
1
answer
Let a complex number be w = 1 – √3i . Let another complex number z be such that zw = 1 and arg(z) – arg(w)
answered
Jul 5
in
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
by
Brainiak
(
10.3k
points)

9
views
complexnumberjee2021pyq
+1
vote
1
answer
Which of the following Boolean expression is a tautology? (1) (p ∧ q) ∨ (p ∨ q)
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

9
views
mathematicalreasoningjee2021
0
votes
1
answer
Let F1(A,B,C) = (A∧~B) ∨ [~C ∧ (A ∨ B)] ∨~A and F2(A, B) = (A ∨ B) ∨ (B →~A) be two logical expressions.
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

20
views
mathematicalreasoningjee2021
0
votes
1
answer
The contrapositive of the statement "If you will work, you will earn money" is : (1) You will earn money,
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

12
views
mathematicalreasoningjee2021
0
votes
1
answer
The statement A → (B → A) is equivalent to : (1) A → (A ∧ B) (2) A →(A → B) (3) A →
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

8
views
mathematicalreasoningjee2021
0
votes
1
answer
The negation of the statement ∼p∧(p∨q) is : A ) p∨∼q B) ∼p∨q C) ∼ p ∧ q D) p ∧ ∼ q
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

9
views
mathematicalreasoningjee2021
+1
vote
1
answer
If the Boolean expression ( p ∧ q ) ⊙ ( p ⊗ q ) is a tautology, then ⊙ and ⊗ are respectively given by :
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

21
views
mathematicalreasoningjee2021
0
votes
1
answer
The statement among the following that is a tautology is : (1) A ∧ (A ∧ B) (2) A ∧(A ∧ B) (3) B → [A ∧(A → B)] (4) [A ∧ (A → B)] → B
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

17
views
mathematicalreasoningjee2021
+1
vote
1
answer
If the Boolean expression (p ⇒ q) ⇔ (q * ( ∼ q) is a tautology, then the boolean expression p * ( ∼ q) is equivalent to :
answered
Jul 5
in
MATHEMATICAL REASONING
by
Brainiak
(
10.3k
points)

57
views
mathematicalreasoningjee2021
+1
vote
1
answer
Let S = {1, 2, 3, ... , 100}. The number of nonempty subsets A of S such that the product of elements in A is even is :
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

17
views
0
votes
1
answer
Let X = {n ∈ N : 1 ≤ n ≤ 50}. If A = {n ∈ X : n is multiple of 2} and B = {n ∈ X : n is a multiple of 7},
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

6
views
0
votes
1
answer
Let Ui = 1 Xi for i ∈ 50 = Ui = 1 for i ∈ n Yi = T, where each Xi contains 10 elements and each Yi contains 5 elements.
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

39
views
0
votes
1
answer
A survey shows that 73% of the persons working in an office like coffee, whereas 65% like tea.
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

45
views
0
votes
1
answer
Set A has m elements and Set B has n elements. If the total number of subsets of A is 112 more than the total number of subsets
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

11
views
setsrelationandfunctionjee
+1
vote
1
answer
In a college of 300 students, every student read 5 newspaper and every newspaper is read by 60 students.
answered
Jul 3
in
SETS, RELATIONS AND FUNCTIONS
by
Brainiak
(
10.3k
points)

6
views
To see more, click for all the
questions in this category
.
Ask a question:
All categories
Doubt
0
JEEmain
263
Physics
126
chemistry
43
Mathematics
84
SETS, RELATIONS AND FUNCTIONS
16
COMPLEX NUMBERS AND QUADRATIC EQUATIONS
5
MATRICES AND DETERMINANTS
0
PERMUTATIONS AND COMBINATIONS
0
MATHEMATICAL INDUCTIONS
0
BINOMIAL THEOREM AND ITS SIMPLE APPLICATIONS
0
SEQUENCE AND SERIES
0
LIMIT, CONTINUITY AND DIFFERENTIABILITY
0
INTEGRAL CALCULAS
0
DIFFRENTIAL EQUATIONS
0
COORDINATE GEOMETRY
0
THREE DIMENSIONAL GEOMETRY
0
VECTOR ALGEBRA
0
STATISTICS AND PROBABILITY
0
TRIGONOMETRY
0
MATHEMATICAL REASONING
8
Uncategorized
55
YEARWISE
10
MHTCET
22
maharashtra state board
204
11th Science Maharashtra Board
86
12th Science Maharashtra Board
32
questionhub
3
general
7
computerscience
35
Exam papers
10
MOCK TEST
2
Uncategorized
11
675
questions
656
answers
11
comments
20
users