Find the Indicated Cardinal Number $n ( B )$ Given That $n ( A \times B ) = 90$

question 37

Multiple Choice

Find the indicated cardinal number.
-Find $n ( B )$ given that $n ( A \times B ) = 90$ and $n ( A ) = 9$ .

• A) 9
• B) 81
• C) 99
• D) 10

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