Question 877903
U = {a, b, c, d, e, f, g, h, i,j , k, l, m, n, o, p} 
A = {a, e, i, o} 
B = {b, c, d, f, g, h, j, k, l, m} 
C = {a, b, c, d, e, f, g}
*[illustration letters.bmp]