Question

Find the symmetrical difference between R ={l,n,m,o,p} and S= { j,l,n,q}

Answer 1

R-S ={m,o,p}

S-R = { j, q}

R∆S is called symmetrical difference and is given by:

R∆S=(R-S) U (S-R) = { m,o,p,j,q}