WAEC - Mathematics (1995 - No. 8)
If R = [2, 4, 6, 7] and S = [1, 2, 4, 8], then R∪S equal
[1,2,4,6,7,8]
[1,2,4,7,8]
[1,4.7,8]
[2.6.7]
[2.4]
Giải thích
R = {2, 4, 6, 7}; S = {1, 2, 4, 8}
R \(\cup\) S = {1, 2, 4, 6, 7, 8}
R = {2, 4, 6, 7}; S = {1, 2, 4, 8}
R \(\cup\) S = {1, 2, 4, 6, 7, 8}