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Alan has forgotten his 4-digit PIN code. He knows the first digit is odd, and the last digit is a 5. How many different sets of 4 digits could it be?
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Alan has forgotten his 4-digit PIN code. He knows the first digit is odd, and the last digit is a 5. How many different sets of 4 digits could it be?
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Apr 26, 2022
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Alan has forgotten his 4-digit PIN code. He knows the first digit is odd, and the last digit is a 5. How many different sets of 4 digits could it be?
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Caylin
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Caylin
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1
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Answer:
72
Calculate one by one:
9
P
2
Dmitry Ionash
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Apr 30, 2022
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Dmitry Ionash
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