Therefore the factors of 21 are 1, 3, 7 and 21.
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Keeping this in view, what is the sum of 21?
It wants the sum of, meaning the value added together, of the factors of, meaning the whole numbers that you can divide into 21 and still get a whole number, 21. Let's see what the factors of 21 are: Well, 21= 121, 21=37, and that's it! Now to sum them up, 1+3+7+21 = 32.
Also, what 3 numbers equal 21? 4+7+10=21. 4+8+9=21. 3+8+10=21.
Keeping this in consideration, what 2 numbers have a sum of 21 and a difference of 5?
The two numbers are 13 and 8. The difference (13 - 8) is 5.
How do you make 21?
It's quite simple. Then add 20 + 1 = 21. Basically, what you need to do is find a way to multiply/add the numbers so they give you 21. If you multiply them all by each other; 1 x 2 x 3 x 4, they give you 24.
Related Question AnswersWhat are factors 21?
21 is a composite number. 21 = 1 x 21 or 3 x 7. Factors of 21: 1, 3, 7, 21. Prime factorization: 21 = 3 x 7.Is 21 a prime number?
Is 21 a prime number? For 21, the answer is: No, 21 is not a prime number. The list of all positive divisors (i.e., the list of all integers that divide 21) is as follows: 1, 3, 7, 21. For 21 to be a prime number, it would have been required that 21 has only two divisors, i.e., itself and 1.What 4 numbers add up to 21?
Therefore the factors of 21 are 1, 3, 7 and 21.What is the sum of first 20 natural number?
The first 20 natural numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20. Use the formula Average = Sum of Values ÷ Number of Values to find the answer. Hence, the average of the first 20 natural numbers is 10.5.What is the sum of?
the aggregate of two or more numbers, magnitudes, quantities, or particulars as determined by or as if by the mathematical process of addition: The sum of 6 and 8 is 14. a particular aggregate or total, especially with reference to money: The expenses came to an enormous sum.What is the sum of n and 9?
where n can be any integer, in this case say n = 9. So the sum is 10 X (9+1) / 2= (10 X 10) /2 = 5 X 10 = 50 is the answer. 50X 101= 5050 is the answer .What is the sum of two numbers?
Answer: Sum means add, and product means multiply. Therefore the two numbers needed are 1 and 4, because 1 added to 4 is 5 and 1 multiplied by 4 is 4.What is the sum of 1 to 25?
So, the sum of even numbers between 1 and 25 is 156.What is the sum of 28?
The sum of all divisors of 28, is 1+2+4+7+14+28 = 56. The number 28 has 6 divisors in total. Their sum is 56, which is twice the number 28. According to the definition of perfect numbers, a natural number n is called perfect if and only if σ(n) = 2n.What is the sum of two numbers is 20 and their difference is 4?
Re: Find two numbers where difference is 20 & the sum is -4 The answer is -12 and 8,that's right.What has a sum of 18 and a difference of 8?
SOLUTION: the sum of two number is 18 and their difference is 8. solve the system x+y=18 x-y=8. Question 672265: the sum of two number is 18 and their difference is 8.What two numbers have a sum of 18 and a difference of 4?
They are 7 and 11. 11 + 7 = 18, 11 - 7 = 4.What is the sum of two numbers is 19 and their difference is 5?
The sum of the two numbers is 19, which means that a+b = 19. The difference between the numbers is 5, which means that a-b=5.What two numbers have a sum of 40 and a difference of 10?
2 Answers By Expert Tutors- "The sum of two numbers is 40." 25 + 15 = 40.
- "Their difference is 10." 25 - 15 = 10.
