Answer to Question #148562 in Discrete Mathematics for saffy

Question

Let A = {2,3,4} , B = {6,8,10} , and C = {a,b}
True or False?
(i) 4R6
(ii) 4R8
(iii) (3,8) ∈ R
(iv) (2,10) ∈ R
(v) (4,12) ∈ R

Answer 1

(i) 4R6 - 4 in A, 6 in B => True

(ii) 4R8 - 4 in A, 8 in B => True

(iii) (3,8) ∈ R - 3 in A, 8 in B => True

(iv) (2,10) ∈ R - 2 in A, 10 in B => True

(v) (4,12) ∈ R - 4 in A, 12 is not in B => False