Answer:
The different variable in C is 21213316700.
Explanation:
Given value:
Total value = letters + underscore value
Total value = 52 + 1
Total value =53
choice for first character = 53 letters +10 digits
first character = 63
choice for remaining characters
So,
Variable number With one 1 character = 53
Variable number With 2 character = 53 × 63
Variable number With 3 character = 53 × 63²
Variable number With 4 character = 53 × 63³
.
.
.
Variable number With 7 character = 
Total difference variable = 53 + 53 × 63+ 53 × 63²+ 53 × 63³+....+ 
Total difference variable = 53(1 + 63 + 63²+ 63³+ .... + )
Formula:
Total difference variable
This is true, A firewall is used to get rid of viruses and attackers and keep them out of your computer. But if not properly implemented can do next to nothing for you.
<span>Volatile memory requires electricity or some kind of current to store information, and nonvolatile memory does not.</span>
Answer: False
Explanation: Desktop management is the managing of the computer system and its elements .They also supervises the data organization , network management, etc.
The desktop management software requires automatic installation rather than being installed by the managers.The updates for the antivirus or application occurs after a certain period of time intervals automatically because of the inbuilt feature of the software . So, the given statement is false.
