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Find the cardinality of each set below.

1. \(A = \{3,4,\ldots, 15\}\text{.}\)

2. \(B = \{n \in \N \st 2 \lt n \le 200\}\text{.}\)

3. \(C = \{n \le 100 \st n \in \N \wedge \exists m \in \N (n = 2m+1)\}\text{.}\)