Question

Please Help me to solve fast plz ​

Answer 1

I) { 1,2,3,5,7,9}

II) { 3,5,7}

III) { 2}

Explanation:

n(U)= -1<=X-2 <= 7

= -1+2<= X-2+2<= 7+2

= 1<= X<= 9

n(U)= { 1,2,3,4,5,6,7,8,9}