Question

Q. 20), A-(-3,7) and B - (2,9) then which of the following is false?
1) AnB = (2,7]
2) A-B'=(2,7)
3) A-B- (-3,2)
4) (A u B)'=(infinity,-3) u (9, infinity)​

Answer 1

Answer:

A-(-3,7) and B - (2,9) then which of the following is false?

1) AnB = (2,7]

2) A-B'=(2,7)

3) A-B- (-3,2)

4) (A u B)'=(infinity,-3) u (9, infinity)