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On a number line
MATHEMATICS · Subjective · CBSE · Mathematics · Sets · Sets
Problem
On a number line, set
A
A
A
is represented by a closed circle at
x
=
−
1
x = -1
x
=
−
1
with shading to the right, and set
B
B
B
is represented by an open circle at
x
=
4
x = 4
x
=
4
with shading to the left. Write a single compound inequality that represents the intersection
A
∩
B
A \cap B
A
∩
B
.
Related theory
Sets
Algebra
Sets, subsets and intervals
Subsets of the set of real numbers
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