The number 42 is classified as a counting number, a whole number, and an integer. It is a positive whole number, so it fits all three categories. Therefore, the correct options to select are counting number, whole number, and integer. ;
The number 42 is classified as a counting number, a whole number, and an integer. Therefore, the correct options are A (counting number), B (whole number), and C (integer). All these classifications indicate that 42 is a positive whole number.
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