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# The sum of a number and 20?

Updated: 9/16/2023

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Q: The sum of a number and 20?
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### Is the number 20 a deficient number?

No; 20 is an abundant number. S = {1, 2, 4, 5, 10} is the set of all positive divisors of 20, excluding itself. The sum of these divisors = 1+2+4+5+10=22 which is greater than 20. Therefore 20 is an abundant number, not a deficient number. When the sum exceeds the number, the number is abundant. When the sum equals the number, the number is perfect. When the sum is less than the number, the number is deficient.

It is: 5+15 = 20

### What is the algebraic expression for 4 times the sum of a number and 20?

what is 4 times the sum of a number squared and 3

17 and 3 = 20

1

### What number is the product of 16 and the sum of 20?

A single number cannot have a sum or a product - a sum or product is used to compare two or more numbers.

### What is the sum of 20 and 0.000000001?

As the 20 is a whole number and the rest is a decimal number, the answer is: 20.000000001

2.5

### The mass number of an atom of calcium with 20 protons and 20 neutrons is?

The mass number of an atom is the sum of the protons and neutrons in its nucleus. Therefore, for an atom of calcium with 20 protons and 20 neutrons, the mass number would be 40.

### What is the sum of 25?

The sum of a single number is the number itself. But usually the word "sum" is used for adding more than just one number.

13 &amp; 7

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