The set S : = { 1, 2, 3 .........12} is to be partitioned into three sets A, B, C of equal size. Thus A 
B C = S, A 
B = B C = A C = 
. The number of ways to partition S is -
Answer:The correct answer is: S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
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