Question

If A ⊂ B, then A ∩ B = ∅.
True
False

Answer 1

@Loser66

Answer 2

@Luigi0210

Answer 3

@welshfella

Answer 4

I'll have to check it out but i think ⊂ means ' a subset of'

Answer 5

yes it means A is a subset of B and A has fewer elements than B

like {1,2} is a subset of { 1,2,3}

Answer 6

and ∩ means an intersection of A and B
- that is a set containing common elements of A and B

so iun the above case

A ∩ B = {1.2}


so what do you think - is the proposition in the question true?

Answer 7

by the way ∅ means 'the empty set' - A set containing no elements.

Answer 8

A ∩ B = {1,2} - is that an empty set?