You are looking for your first credit card. You plan to use this credit card only for emergencies and to pay the credit card bal
2 answers:
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Answer:
- <u>10 pairs</u>
- <u>It is a combination</u>
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Explanation:
This is a combination because the order does not matter: the Beagle - Collie couple is the same as the Collie - Beagle couple, so it is only counted once.
The formula for combinations is:
For five diffferent dogs to be put in pairs, the number of different pairs is: