I believe it is the first one, i did some research for this question
You should avoid deleting the unknown files to store your personal files and folders because if you delete that files it may be critical position with computer.
Answer:
1. Numeric variable:
A variable which can store numeric value is called numeric variable.
e.g.
A=12
pi=3.14
c=79.89
2. String variable:
A variable which can store string variable is called String variable. String is a array of character enclosed within the double inverted comma.
e.g.
N$="ram"
Place$="Kirtipur Kathmandu"
note that a string variable ends with $
Explanation:
A variable is a quantity which can store value in computer memory. A variable is also a quantity whose value changes during the execution of a program. Like in mathematics a variable holds certain value Just in QBASIC; it is a placeholder for storing value in computer memory
Another name for low-angle lighting is under-lighting.