Suzy randomly picks marbles from a bag containing 20 identical marbles. How many possible outcomes are there if she selects 2 marbles?
Added by Elizabeth Q.
Step 1
Step 1: Calculate the total number of ways Suzy can select 2 marbles from 20 identical marbles using the combination formula: \[ \binom{20}{2} = \frac{20!}{2!(20-2)!} \] Show more…
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