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Why is the set of positive whole numbers closed under subtraction?
The set of positive whole numbers is not closed under subtraction! In order for a set of numbers to be closed under some operation would mean that if you take any two elements of that set and use the operation the resulting "answer" would also be in the original set.26 is a positive whole number.40 is a positive whole number.However 26-40 = -14 which is clearly not a positive whole number. So positive whole numbers are not closed under subtraction.
What is the product of two whole numbers if their sum is 21 and positive difference is 5?
The numbers are 13 and 8 The product is 104
Can a real number be negative?
Yes, real numbers include both positive and negative numbers. They also include whole numbers and fractional numbers, as well as irrational numbers (numbers that can't be expressed as the ratio of two whole numbers).
The sum of two positive numbers is?
The sum of two positive numbers is always a positive number.
What are numbers with a least common multiple of 35?
None. The LCM (least common multiple) is the smallest positive whole number exactly divisible by two or more whole numbers.
