Activity 2: Unfreeze Your Mind A. Evaluate: 1. C(15,10) 2. 2 + C(4,2) + C(6,3) 3. C(20,5) - 4 4. \frac{C(7,2)}{5} + C(3,2) 5. -3 + C(9,5) B. Find the value of the unknown. 1. C(n, 4) = 15 2. C(10,r) = 120 3. C(n,3) = 35 4. C(11,r) = 165 5. C(n,2) = 78
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