alleryStart learning →How many 5-digit numbers using digits 1 to 5 once each are divisible by 4?
A30
B48
C12
D24
Answer & Solution
Correct answer: D. 24
The last two digits must be 12, 24, 32 or 52 (4 ways), and the other three digits arrange in 3! = 6 ways: 24.
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