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11 is divisible by 11.
11 times 2 is 22.
11 < 22
11 is deficient.
13 is divisible by 4 and 13.
The sum of 4 and 13 is 17.
13 times 2 is 26.
17 < 26
13 is deficient.
and so on...
You just see what goes into the number (in this example, we use the numbers 11 and 13), then add them all together. Then you multiply the number you're investigating with 2, and if the result of this is greater than the sum, it is deficient.
Let's check 12 (which is not deficient):
12 is divisible by 2, 3, 4, 6, and 12
The sum of 2, 3, 4, 6, and 12 is 27
12 times 2 is 24
24 < 27
The sum is greater, so 12 is not deficient.
Wiki User
∙ 14y ago
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Is 55 a abundant number or a deficient number?
55 is deficient.
Is 24 an deficient number?
NO- 24 is not deficient.
Is the number 25 abundant deficient or perfect number?
It's deficient
What is a deficient number?
A deficient number is a number with its proper factors equalling a lower number than itself.
Is 29 a perfect abundant or deficient number?
It is deficient.
Does the number 11 have a abundant number?
11 is deficient.
Is 11 an deficient number?
yes.
Is number 11 an abundant and why?
No. All prime numbers are deficient.
Is 99 a deficient number?
A number whose proper factors add up to less than the number is called deficient. 99 is a deficient number because the sum of its proper factors (1, 3, 9, 11, and 33) is 57.
Is deficient a number?
no. its a type of number. as in, a number can be deficient.
Is the number 21 abundant or deficient or perfect?
It is deficient: It's only proper divisors are 1, 3, and 7, which sums to 11, which is less than 21.
Is 55 a abundant number or a deficient number?
55 is deficient.
Is 24 an deficient number?
NO- 24 is not deficient.
Is the number 25 abundant deficient or perfect number?
It's deficient
What is a deficient number?
A deficient number is a number with its proper factors equalling a lower number than itself.
Is 35 a abundant deficient or perfect number?
deficient
Is 29 a perfect abundant or deficient number?
It is deficient.
