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# An employee ID code must consist of five digits, but the first digit c

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Math Expert
Joined: 02 Sep 2009
Posts: 55267
An employee ID code must consist of five digits, but the first digit c  [#permalink]

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15 Apr 2018, 09:47
00:00

Difficulty:

15% (low)

Question Stats:

93% (01:00) correct 7% (01:35) wrong based on 52 sessions

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An employee ID code must consist of five digits, but the first digit cannot be zero and the last digit must be even. How many possible codes are available?

A. 4500
B. 9000
C. 45000
D. 90000
E. 100000

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Intern
Joined: 08 Apr 2018
Posts: 6
Re: An employee ID code must consist of five digits, but the first digit c  [#permalink]

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15 Apr 2018, 10:25
Possibilities for units place = 5
Possibilities for tens, hundreds and thousands place are 10 each
Possibilities for Ten thousands place is 9.
So 9×10×10×10×5=45000

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Re: An employee ID code must consist of five digits, but the first digit c   [#permalink] 15 Apr 2018, 10:25
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