A = {a,b,c,d} and R A X A where R = { (a,a), (b,b), (c,c), (a,b), (b,c), (c,d) }

1) The reflectie closure of R has ______ elements.

a) 7 b) 8 c) 9 d) 10 e) 11 f) 12 g) none of these

2) The symmetric closure of R has ______ elements.

a) 7 b) 8 c) 9 d) 10 e) 11 f) 12 g) none of these

3)The transitive closure of R has _______ elements.

a) 7 b) 8 c) 9 d) 10 e) 11 f) 12 g) none of these