So there are two things we need. One, the number must be an integer, and two the number must be positive.
Here are some examples.
If you number the questions on a test, they will be positive integers/
If you look at the number of people who read the answer to this question it must be a positive integer. I already read it so it can't be 0
The number of people in the world is a positive integer.
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Aninteger by definition must be a whole number... no 5.5 or 1/3 . Examples of integers are 3, -3, and 0. So YES a positive integer (or a negative integer ) is a whole number.
A must therefore be an integer - though which integer it is is unclear and needs further explanation.
An isoquant is a graph showing the same quantity of output for various combinations of inputs. Since these are all measures of quantity, they must all be positive.
No, to be an integer a number must not have a decimal value.
The first number must be a nonzero single-digit integer. The exponent must be an integer.