B.Fabian does not know how many problemshe has already solved.He knows he has to solve 5 moreproblems to finish the assignment.
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Answer:
5x^2
Step-by-step explanation:
12 can be taken out from the top and bottom then for the x you subtract
Each of the first 3 letters can be chosen from the 23 letters, {A, B, C, …, U, V, W}, so there are 23³ possible choices.
The first 2 digits can be any number from {0, 1, 2, …, 9}, so there are 10² choices.
The last digit cannot be 0 or 9, so you can select from {1, 2, 3, …, 8} which gives 8 choices.
Then the total number of PINs that you can make is
23³ × 10² × 8 = 9,733,600