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Zara has forgotten her 4-digit PIN code. She knows the first digit is a factor of 20 and the 4 digits make a number divisible by 2. How many different sets of 4 digits could it be?
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Zara has forgotten her 4-digit PIN code.

She knows the first digit is a factor of 20 and the 4 digits make a number divisible by 2.
How many different sets of 4 digits could it be?

User Shima
by
5.3k points

1 Answer

1 vote

Explanation:

1st digit : 1 / 2 / 4 / 5

4th digit : 0 / 2 / 4 / 6 / 8

Total number of sets = 4 * 10 * 10 * 5 = 2000.

User Peco
by
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