Free Practice Question
PS · Problem Solving
505-555
Combinations
A random 9-digit numeric passcode is generated. If the first digit cannot be 0, 2, or 8, and the last digit cannot be a prime number, how many unique codes can be formed?
Answer Choices
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180,000,000
B
240,000,000
C
300,000,000
D
360,000,000
E
420,000,000
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Explanation
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Comments
2
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T
TuckerSep 7, 2024
got this wrong on my practice
Details
Difficulty
505-555
Type
PS
Category