Question

Which of the following pairs of sets are equal
a) A = { x : x is letter of word “ALLOY” } ,B = { x : x is letter of word “LOYAL” }
b)A = { –2, –1, 0, 1, 2} , B = { 1, 2}
c) A = { 0 } , B = { x : x > 5 and x < 15 }
d) A = { x : x 5 = 0} , B = { x : x2= 25 }

Answer 1

a) A = { A, L, O, Y }

B = { L, O, Y, A }

A = B

b) A =! B (A not equal to B)

c) A = { 0 }

B = { 0 }

A = B

d) question is not clear