Respuesta :
Answer:
Input : n = 687
Output : 21
A
Input : n = 12
Output : 3
Step-by-step explanation:
The expression which is used to calculate the sum of numbers is option D which is number+number.
What is sum?
Sum is basically the total amount which we get from adding two or three numbers. The sign which is used between numbers is +.
How to find sum?
We have to calculate sum of numbers. let's take options one by one with an example. Let's take first number be 1 and second number be 2.
A) total+number
Total of 1 and 2 =3
numbers =1,2
Expression gives=3+1+2=6
It does not gives total of numbers.
B) Total+number=total
Total of 1 and 2 =3
numbers =1,2
Expression gives=3+1+2=6
It does not equal to total of numbers.
C) Total+number
It is repeation of first option.
D) Number+Number
First number=1
Second number=2
Total of numbers=1+2=3
Expression:1+2
=3 which is the total of numbers.
It is correct.
Hence the expression which tells us the sum of numbers is number +number.
Learn more about sum at https://brainly.com/question/542712
#SPJ2
