How many ways can we choose a 5 digit code out of 10 digits (includes ) if no numbers can be repeated?
1 answer:
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Answer:
Yes
Step-by-step explanation:
Given
Required
Is D a subset of itself?
A subset is defined in such a way that, all elements of the subset can be found in the main set.
So; because set D contains all of its elements, then D is a subset of itself.