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Ms Eccentric
Subject: Maths
, asked on 15/4/18
How can the elements of a set be in discrete ? Give an example. Please do not provide any link or hints.
Answer
1
अर्कज
Subject: Maths
, asked on 15/4/18
Example 8
Answer
1
Eshita Rastogi
Subject: Maths
, asked on 14/4/18
Ex7 (v) I don't understand why it is false cz the explanation they have given they have taken elements 1 and 2 in A and elements 2,3,4,5 in set B but can't we take 1,3,4,5 in B then 1 will belong to B also....please explain by calling me
Answer
1
Eshita Rastogi
Subject: Maths
, asked on 14/4/18
Show that
n
{P[P (P(ϕ)]} = 4.
Answer
1
Eshita Rastogi
Subject: Maths
, asked on 14/4/18
Q16 in this q binomial theorem is used for solving which by now has not been taught to us....so solve in a different manner if possible
Q.16. If
X
=
8
n
-
7
n
-
1
:
n
∈
N
and Y =
49
n
-
1
:
n
∈
N
, then prove that X
⊆
Y.
Answer
1
Eshita Rastogi
Subject: Maths
, asked on 14/4/18
Which of the following statements are true? Give reason to support your answer.
(i) For any two sets
A
and
B
either
A
⊆
B
or
B
⊆
A
.
Answer
1
Eshita Rastogi
Subject: Maths
, asked on 14/4/18
What is this called?
Answer
2
Eshita Rastogi
Subject: Maths
, asked on 13/4/18
is {1} ={{1}}
Answer
1
Ghosh Brothers
Subject: Maths
, asked on 13/4/18
F
o
r
a
n
y
t
w
o
s
e
t
s
A
a
n
d
B
,
s
h
o
w
t
h
a
t
P
(
A
)
∪
P
(
B
)
⊂
P
(
A
∪
B
)
,
b
u
t
P
(
A
∪
B
)
i
s
n
o
t
n
e
c
e
s
s
a
r
i
l
y
a
s
u
b
s
e
t
o
f
P
(
A
)
∪
P
(
B
)
.
Answer
1
Ghosh Brothers
Subject: Maths
, asked on 13/4/18
Pls solve:
8. For any three sets
A
,
B
,
C
,
let
A
∪
B
=
A
∪
C
and
A
c
∪
B
=
A
c
∪
C
.
Show
that
B
=
C
.
Answer
1
Ghosh Brothers
Subject: Maths
, asked on 13/4/18
Let
A, B
and
C
be the sets such that
A
⋃
B
=
A
⋃
C
and
A
⋂
B
=
A
⋂
C
, show that
B = C
.
Answer
1
Ghosh Brothers
Subject: Maths
, asked on 13/4/18
F
o
r
a
n
y
t
w
o
f
i
n
i
t
e
s
e
t
s
A
a
n
d
B
p
r
o
v
e
t
h
a
t
P
(
A
∩
B
)
=
P
(
A
)
∩
P
(
B
)
.
Answer
1
Aathrayee
Subject: Maths
, asked on 13/4/18
Explain why in some places in set builder we use z:x and in some places we write x:and start writing the case /condition
Answer
2
अर्कज
Subject: Maths
, asked on 13/4/18
Illustration 2
Answer
1
अर्कज
Subject: Maths
, asked on 13/4/18
Prove that the total number of subsets of a finite set containing n elements is 2n
Answer
1
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Q.16. If and Y = , then prove that XY.
(i) For any two sets A and B either A ⊆ B or B ⊆ A.
8. For any three sets