11 combination of 3 times 6 combination of 3

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11 combination of 3 times 6 combination of 3

11 combination of 3 = 165
6 combination of 3 = 20

11 combination of 3 times 6 combination of 3 = 165 * 20
11 combination of 3 times 6 combination of 3 = 3300