Question

write the cardinal number of the set A=(Natural Number less than 10)

Answer 1

Answer:

number 3 is called the cardinal number, or cardinality, of the set {1, 2, 3} as well as any set that can be put into a one-to-one correspondence with it. (Because the empty set has no elements, its cardinality is defined as 0.)

Answer 2

Answer:

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