Answer:
D.) 7
Step-by-step explanation:
To calculate the check digit, multiply every even-position digit (when counted from the right) in the number by two. If the result is a two digit number, then add these digits together to make a single digit (this is called the digital root):
Odd numbers: (1.)= 8 (3.)= 4 (5.)= 6 (7.)= 0 (9.)= 4 (11.)= 6 (13.)= 2 (15.)=(1 + 6)= 7
Even numbers: (2.)= 3 (4.)= 8 (6.)= 1 (8.)= 3 (10.)= 6 (12.)=5 (14.)=0
To this total, we then add every odd-position digit:
Odd = 37
Even = 26
This will result in a total:
37 + 26 = 63
The check-digit is what number needs to be added to this total to make the next multiple of 10:
Next multiple of 10 is 70.
70 - 63 = 7
Answer:
7
Hope this helps : D
Line up 136 and 212 with 136 on top and 212 on the bottom.
136
+212
____
now add up the end numbers, 6 and 2. That's 8. Since 8 is only a single-digit number, it fits in the space. Write that down under 6 and 2.
Next, add up the middle numbers, 3 and 1. That's 4, it fits in the space, so you don't need to regroup here either.
Now add up the first number in each, and that adds up to 3.
The sum is the number you wrote down! It should look something like this.
136
+212
____
348
You can say that the sum of these numbers is 348, and you did not have to regroup because the sums of each digit was under 10!
Answer: Andre
Step-by-step explanation: coz I juss know..
