What is the check digit, d, for the credit card number shown below? 6424 9813 2720 008d
А. 1
B. 3
с. 5
D. 7

A.1

Step-by-step explanation:

I did a check digit calculator and it said that this would be the check digit

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google