Answer:
The correct answer should be 11
Step-by-step explanation:
Let me know if this is wrong and I will correct it if it is.
A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 7-key keypad. Repetition of digits i
1 answer:
Answer:
1 in 16,807 chance or a 0.00595% chance
Step-by-step explanation:
There is only one correct 5-digit pin that the thief must guess. If there are 7 possible values for each of the five digits, the total number of combinations is:
Therefore, there is a 1 in 16,807 chance or a 0.00595% chance that the thief will guess on the first try.
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Answer:
The American population was 20% of the British population.
Step-by-step explanation:
Let us call the american population,
the British population before the migration, and
the population that migrated from America to Britannia.
Now, the population that migrated was 20% of the american population:
,
and the same population increase the British population by 4%:
Combining equation (1) and (2) we get:
Thus, the American population was 20% of the British population.