what is the positive difference between these two sets of numbers 75 to 90 and 68 to 84

Question

Has to be positive

Answer 1

A = {75, 76, 77, ... 89, 90}

B = {68, 69, 70, ... 83, 84}

 

A - B = the numbers in A minus the numbers in B

A - B = {85, 86, 87, 88, 89, 90}