Answer:
6048 hours is required to guarantee access to the database
Explanation:
If a password contains 8 distinct digits, then there are P(10,8) permutations possible
P(10,8)=10! / (10-8)! = 10!/2! = 1814400
Since it takes 12 seconds to try one combination,
1814400×12 = 21772800 seconds is required to guarantee access to the database. This is
Answer:
Explanation:
Required
First, carry out the addition in binary
The step is as follows (start adding from right to left):
--- Write 0 carry 1
---- Write 1 carry 1
---- Write 1
--- Write 1
---- Write 0
---- Write 0
--- Write 0 carry 1
No other number to add ; So, write 1 (the last carry)
So, we have:
Next, convert to base 10 using product rule
Lastly, convert to hexadecimal using division and remainder rule
Write the remainder from bottom to top;
In hexadecimal
So, we have:
Hence: