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Q: Is 100 a deficient or abundant or perfect number?
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Is 100 abundant or deficient or perfect?

abundant


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 100 deficient?

No.


Is 100 a perfect number?

No.


What is least number of 3digits which is a perfect squares?

100


What are the some number facts between 100 to 999?

100 has perfect rute


Is 30 a perfect number?

No. The only perfect numbers below 100 are 6 and 28.


Is 34 a perfect number?

No. The only perfect numbers below 100 are 6, and 28.


Is 50 a perfect number?

No, the only perfect numbers under 100 are 6 and 28.


Is 42 a perfect number?

Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)


What kind of number is 100?

It is a counting number,an integera perfect squarea rational numbera real number.


Do you add 10 twice when adding the factors of 100 to determine if 100 is an abundant number?

No. Square roots are listed once.

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