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Question
Mathematics
If A = 1, 2, 3, 4 B = 3, 4, 5 C = 4, 5, 7, 8 find A - (B - C).
Q. If
A
=
{
1
,
2
,
3
,
4
}
;
B
=
{
3
,
4
,
5
}
;
C
=
{
4
,
5
,
7
,
8
}
; find
A
−
(
B
−
C
)
.
1557
246
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A
{
3
,
4
,
5
}
16%
B
{
4
,
5
}
11%
C
{
4
}
17%
D
{
1
,
2
,
4
}
55%
Solution:
B
−
C
=
{
3
,
4
,
5
}
−
{
4
,
5
,
7
,
8
}
=
{
3
}
A
−
{
B
−
C
}
=
{
1
,
2
,
3
,
4
}
−
{
3
}
=
{
1
,
2
,
4
}