Anyone know da answer?
1 answer:
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Total number of CDs = 12
Number of CDs that can be selected at once = 2
Selecting 2 CDs from 12 means combination of 12 objects taken 2 at a time. This can be calculated by 12C2.
This means, we have 66 possible combinations to choose from
Number of CDs that can be selected at once = 2
Selecting 2 CDs from 12 means combination of 12 objects taken 2 at a time. This can be calculated by 12C2.
This means, we have 66 possible combinations to choose from