Answer:
The answer is "Self-Checking digits".
Explanation:
- A self-check digit is a technique, that determines whether the identification number is valid or not. for example employee number, customer number, and invoice number.
- It allocates by using the formula and the method, which will check that identified by a person that commits fraud by creating a false ID number.
The answer is column F. During relative copy and paste in Excel, the positioning of the '$' symbol effectively indicated an absolute reference to a position, so that is not updated. Therefore, in the formula '<span>=F$5+12</span>', only column F is updated.
Answer:
b. & Puihaha
Explanation:
PHP variables are supposed to start with a $ sign.
Other rules followed by PHP variables are:
Starting character in variable name (after $) must be letter or _.
Other characters in variable names can be letters,numbers or _.
a. $_Puihaha
c. $Pui_haha
d. $Puihaha
satisfy these rules.
Whereas , b. & Puihaha does not satisfy as it starts with '&'. Moreover it also contains an invalid space character in the variable.
