Question

Can someone explain the difference please???

What is the difference between ∪ and ∩?!?! I don't understand...

Answer 1

So, ∪ is union and ∩ is intersection then?

Answer 2

taking an example

A = {a,b,c,d}, B = {b,d,f,h}
∩ is INTERSECTION = common elements
A∩B = {b,d}

U mean UNION = elements present in all sets (all elements considered only once)
AUB = {a,b,c,d,f,h}

makes sense ?

Answer 3

This is intersection then right?

Answer 4

intersection of what ?

Answer 5

No, then its would be union then?

Answer 6

This is my question, I dont quite understand the difference between the answers tho...

Answer 7

OR = UNION
AND = INTERSECTION

Answer 8

since OR = U = UNION, its either 1st or 3rd
so, x-2 <1
clearly gives x <3

Answer 9

Ok, I think I get it now... Thanks @hartnn