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Q: Is 15 a abundant deficient or perfect number?
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Is 15 an abundant number?

No, it is deficient.


Is 15 abundant or deficient?

15 is deficient.


Is 75 perfect abundant or deficient?

A perfect number is one with factors (apart from itself) that sum to give the original number. An abundant number is one where this sum is greater than the original number. A deficient number is one where the sum is less than the original number. The factors of 75 are 1, 3, 5, 15 and 25. The sum of these numbers is 49. Thus 75 is a deficient number.


Is 16 abundant deficient or perfect?

The proper factors of 16 are 1, 2, 4, 8 with sum 15 which is less than 16, so 16 is deficient.


Is 15 a deficient number?

Yes 15 is a deficient number because its factors add upp to less than the number itself,which is 15.


Is fifteen an abundant number?

It is not. See for yourself: It's proper factors are 1, 3, and 5, for a total of 9 < 15; it is deficient. QED.


How can you describe a number by both the number of its factor and the kind of factors?

There are more than just prime and composite, there are 3 other types which you can describe a number by the kind of factors. They are abundant number, deficient number, and perfect number. An abundant number is a number which if its factors were all added up , the sum would be greater than the number itself. A deficient number is a number in which if all its factors were added up the sum would be less than the number itself. A perfect number is in which a numbers factors are added up and the sum will be the same number as the number itself. Example of abundant number: 12 because these are its factors, 1+2+3+4+6 which equals 16 and 16 is greater than 12. Example of a deficient number: 15 because 15's factors are 1+3+5 which equals 9 and 9 is less than 15. Example of a perfect number: 6 because 6's factors are 1+2+3 which equals 6 and 6 is the same as 6


What are the factors sum of the numbers 2-30 and classify each as perfect abundant or deficient?

2: 1, 2 (3) deficient 3: 1, 3 (4) deficient 4: 1, 2, 4 (7) deficient 5: 1, 5 (6) deficient 6: 1, 2, 3, 6 (12) perfect 7: 1, 7 (8) deficient 8: 1, 2, 4, 8 (15) deficient 9: 1, 3, 9 (13) deficient 10: 1, 2, 5, 10 (18) deficient 11: 1, 11 (12) deficient 12: 1, 2, 3, 4, 6, 12 (28) abundant 13: 1, 13 (14) deficient 14: 1, 2, 7, 14 (24) deficient 15: 1, 3, 5, 15 (24) deficient 16: 1, 2, 4, 8, 16 (31) deficient 17: 1, 17 (18) deficient 18: 1, 2, 3, 6, 9, 18 (39) abundant 19: 1, 19 (20) deficient 20: 1, 2, 4, 5, 10, 20 (42) abundant 21: 1, 3, 7, 21 (32) deficient 22: 1, 2, 11, 22 (26) deficient 23: 1, 23 (24) deficient 24: 1, 2, 3, 4, 6, 8, 12, 24 (60) abundant 25: 1, 5, 25 (31) deficient 26: 1, 2, 13, 26 (42) deficient 27: 1, 3, 9, 27 (40) deficient 28: 1, 2, 4, 7, 14, 28 (56) perfect 29: 1, 29 (30) deficient 30: 1, 2, 3, 5, 6, 10, 15, 30 (72) abundant


Is the number 15 a abundant number?

No.


Can you describe a number by both the number of its factors and the kinds of its factors?

Composite numbers have more than two factors whereas prime numbers have only two factors which are itself and one


How do you show 9 as a deficient number?

Deficient number From Wikipedia, the free encyclopediaIn mathematics, a deficient number or defective number is a number n for which &Iuml;&fnof;(n) < 2n. Here &Iuml;&fnof;(n) is the sum-of-divisors function: the sum of all positive divisors of n, including nitself. An equivalent definition is that the sum of all proper divisors of the number (divisors other than the number itself) is less than the number. The value 2n &acirc;&circ;&rsquo; &Iuml;&fnof;(n) is called the deficiency of n.The first few deficient numbers are: 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, &acirc;&euro;&brvbar; (sequence A005100 in OEIS)As an example, consider the number 21. Its divisors are 1, 3, 7 and 21, and their sum is 32. Because 32 is less than 2 &Atilde;&mdash; 21, the number 21 is deficient. Its deficiency is 2 &Atilde;&mdash; 21 &acirc;&circ;&rsquo; 32 = 10.An infinite number of both even and odd deficient numbers exist. For example, all odd numbers with one or two distinct prime factors, and all proper divisors of deficient or perfect numbers are deficient.Closely related to deficient numbers are perfect numbers with &Iuml;&fnof;(n) = 2n, and abundant numbers with &Iuml;&fnof;(n) > 2n. The natural numbers were first classified as either deficient, perfect or abundant byNicomachus in his Introductio Arithmetica (circa 100).


Is the number 16 an abundant number?

No because a abundant # is a number where the sum of its proper factors is greater than itself. 16 is not an abundant number because the sum of its proper factors is (15) less than itself.


Why is15 a deficient number?

That means that the sum of the number's factors, less than the number itself, is less than the number in question - in this case, if you add the factors of 15 (except 15 itself, which is also a factor of 15), you get a total that is less than 15.


Is 15 a perfect square?

No, 15 is not a perfect square.


Why is 225 a perfect square?

225 is a perfect squarebecause 225 = 15*15


What are near perfect numbers?

They are numbers that are NEAR PERFECT. a near perfect number is when its factors (exept the actual number) are added up and ALMOST equal the number ex. 16x1/2x8/4x4/ so its factors are 1,2,4,8 and 16 so add them ( exept the actual number) 1+2+4+8=15 so its NEAR PERFECT and a perfect number is a number that all its factors equal to its number ex. 6-1,2,3,6 are its factors all together-1+2+3=6 those are NEAR PERFECT and PERFECT numbers


Is the square root of a15 a rational number?

No, because 15 is not a perfect square. The closest perfect square is 16, whose square root is 4.


Is 250 a perfect square?

DEFINITION: perfect squareA number p is called a perfect square if and only if there exists a whole number n for which p = n2 .So ask yourself if any whole number squared equals 250.15&Acirc;&middot;15 = 22516&Acirc;&middot;16 = 256nope


Do odd numbers always have an odd number of factors?

No. Consider 15: 1,3,5,15 Every positive whole number has an even number of factors, unless the number is a perfect square.


What is the perfect square of 15?

225


What is the perfect square for 225?

15


What is a perfect age for a boyfriend?

15


Why is 16 a near perfect number?

A near-perfect number is one that is close to being a perfect one (obvi). So to find out if it's perfect or not (there are other terms, but that doesn't really matter right now), you add up it's divisors other than itself. So for example: 6 is a perfect number because 1+2+3+6. 16 1+2+4+8=15, so thus it is near-perfect. The four perfect numbers are 6, 28, 496, 8128


When was The Perfect Weapon created?

The Perfect Weapon was created on 1991-03-15.


When was The Perfect Clown created?

The Perfect Clown was created on 1925-12-15.