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Great question !

Seems to me that those would be the squares of the primes up to sqrt(500).

4 (1, 2, 4)

9 (1, 3, 9)

25 (1, 5, 25)

49 (1, 7, 49)

121 (1, 11, 121)

169 (1, 13, 169)

289 (1, 17, 289)

361 (1, 19, 361)

There are 8 of them.

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45

Q: How many positive integers less than or equal to 500 have exactly 3 positive divisors?

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The sum of two positive integers can never equal zero.

when you have a negative times a negative it will equal a positive but when you have a negative times a positive it will equal a negative no matter what!

Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.

2+2/-2+4

-21

Related questions

The sum of two positive integers can never equal zero.

The positive square root of 64 is exactly equal to 8.

No. Two negative integers added together will never equal a positive integer. It is the product of two negative integers that is positive.

The sum of the first 40 even positive integers can be equal to 820.

There are 1,963 such integers. Every factor of a number has a pair. The only time there will be an odd number of factors is if one factor is repeated, ie the number is a perfect square. So the question is really asking: how many positive integers less than 2008 (in the range 1 to 2007) are not perfect squares. √2007 = 44 and a bit (it lies between 44 and 45) So there are 44 integers less than (or equal to) 2007 which are perfect squares → 2007 - 44 = 1963 integers are not perfect squares in the range 1-2007 and have an even number of factors (divisors).

when you have a negative times a negative it will equal a positive but when you have a negative times a positive it will equal a negative no matter what!

Multiplying and dividing integers is real easy. All you have to do is do regular dividing and multiplying keeping in mind these simple rules: RULES: 1: When multiplying or dividing integers, when the numbers are a positive, positive they equal a positive. When the numbers are negative, negative they equal a positive. In other words, same signs equal positive. 2: This rule is very similar to the rule above. The only change is that when the signs are different, they equal a negative. ( negative, positive= negative, positive, negative= negative.) Please correct me if I'm wrong. Multiply integers- my notes from class positive x positive= positive positive x negative= negative negative x negative= positive Divide integers- again my notes from class positive divided by a positive= positive negative divided by a negative= positive negative divided by a positive= negative Dividing integers are simple if the number has a different sign than the other it is always negative but if they have the same sign its always positive ex. -20/5=-4 ex. -20/-4=-5

No, that is not true.

Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.Then they are, simply, two different integers. Any two positive integers will do, according to the specification.

Only when you divide or multiply.

2+2/-2+4

1. The only positive integer that equals 9 is 9.