Homework Help: Find two open sets A and B, such that A is subset of B, A is not equal

1. Apr 21, 2012

math25

Find two open sets A and B, such that A is subset of B, A is not equal to B, and m(A)=m(B)

Can I use these two sets?

A=(0,2) B=(0,1) U (1,2)

thanks

2. Apr 21, 2012

Dick

Re: measure(A)=measure(B)

Almost. Your example has B a subset of A. You want the reverse.

3. Apr 21, 2012

math25

Re: measure(A)=measure(B)

you are right, thanks