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Class 10 · Mathematics · Easy

If A and B are two overlapping circles in a Venn diagram, which part is A − B?

Class 10 · Mathematics · Easy

In a Venn diagram, how is the region outside both circles but inside the universal set U represented?

Class 10 · Mathematics · Easy

The common region between two circles is the region of what?

Class 10 · Mathematics · Easy

In a Venn diagram, what does the common part of two circles represent?

Class 12 · Mathematics · Expert

On the set of all circles, (C_1RC_2) if and only if the two circles have the same centre. What are the equivalence classes of this relation?

Class 12 · Mathematics · Expert

On the set of all circles, (C_1RC_2) if and only if the two circles have the same radius. What type of relation is this?

Class 12 · Mathematics · Hard

For points in the plane, what kind of equivalence classes are formed by the relation of having the same distance from the origin?

Class 12 · Physics · Medium

If electric field lines are shown as closed circles in a region, why would this diagram be considered wrong for an electrostatic field?