False.
The natural numbers are the counting numbers: 1, 2, 3, ... which are the positive integers; -7 is a negative integer and so not one of them.
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If the number is n then twice the number is 2n and 7 less than twice the number is 2n - 7This could also be a boolean variable based on another variable. If the number is less than or equal to 3.5, the variable is false. Otherwise, it is true.
Not necessarily. The difference between a = 7 & b = 7 is 0, and that is not a natural number.
False
False because 7*24*6 = 1008 hours
false