If A={`x/x in N`, x is a factor of 6}, B={`x/x in N`, x is a factor of 8} then find A-B

If A = {x^2 | x in N, x le 5} and B = {x^3 | x in N, x < 6}, then find A n B.

If A = {x| x is a multiple of 2, x in N} B = {x| x is a multiple of 5, x in N }, C= {x| x is multiple of 10, x in N}, then (A nn B) nn C=

If A = {x//x is a multiple of 2,x in N }, B={x| x is a multiple of 5,x in N}, C= {x|x is multiple of 10, x in N}, then A nn(B nn C)=

Let U = { x/x= 2 ^n , n in W , n < 8} be the universal set. A = { y/y= 4 ^n , n in W , n < 4} B = { z/z= 8 ^n , n in W , n le 2 } Then find A' , B' and (A intersection B)

If (x+4) is a factor of x^2 +mx =24 , then find the value of m.