Question

If A = {5, 7), B = {1, 3), then which one of the following is false :
A). n(AUB)=4
B). n(AnB)=0
c). n (A- B)=3
D).n (B- A)=2​

Answer 1

Answer:

$\huge\underline\bold\color{red}\mathfrak{Answer}$

A) n(AUB) = 4

C) n(A-B) = 3

D) n(B-A) = 2

These are false

$<marquee>❣️Hope it helps❣️</marquee>$

Answer 2

Answer:

The above answer is correct dear.............