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Q: What is the sum of the reciprocal of all the positive integer factors of the number 18?

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Taking the reciprocal (multiplicative inverse) does not affect the positive or negative status of an integer. So the reciprocal of a negative number is negative and the reciprocal of a positive number is positive. The reciprocals will be opposites (positive/negative) just as the original numbers were.

A prime number is a positive integer that has no positive integer factors other than one and itself, and a composite number is a positive integer that have two or more positive integer factors.

Yes, it is.

A prime number is a number with two positive integer factors, while a composite number has more than two positive integer factors. Since the number 0 has no positive integer factors, and the number 1 has just one positive integer factor (itself), neither of these are prime.

The answer is 1.Reciprocal is the quantity obtained by dividing the number one by a given quantity. The reciprocal of x is 1/X. The only positive integer that is itself when divided into 1 is 1.

A prime number is a positive integer with two factors: one and the number itself. A composite number is a positive integer with more than two factors.

A prime number is a positive integer that has only two factors: one and itself. A composite number is a positive integer that has more than two factors.

A prime number is a positive integer that has only two factors: one and itself. A composite number is a positive integer that has more than two factors.

A prime number is a positive integer that has only two factors: one and itself. A composite number is a positive integer that has more than two factors.

A prime number is a positive integer with two factors: one and the number itself. A composite number is a positive integer with more than two factors.

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