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# What is the hundredths digit of the decimal z? (1) the

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Director
Joined: 03 Sep 2006
Posts: 864

Kudos [?]: 1106 [0], given: 33

What is the hundredths digit of the decimal z? (1) the [#permalink]

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01 Apr 2007, 20:57
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What is the hundredths digit of the decimal z?

(1) the tenths digit is 100z is 2

(2) The units digit of 1,000z is 2.

Kudos [?]: 1106 [0], given: 33

Director
Joined: 03 Sep 2006
Posts: 864

Kudos [?]: 1106 [0], given: 33

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01 Apr 2007, 21:30

Kudos [?]: 1106 [0], given: 33

Senior Manager
Joined: 20 Feb 2007
Posts: 256

Kudos [?]: 63 [0], given: 0

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01 Apr 2007, 22:55

Q: What is the hundredths digit of the decimal z?

For example: z = a.bcd
c = ?

(1) The tenths digit of 100z is 2:

100z = a.bcd * 100 = abc.d

The tenths digit of 100z is 2, so d = 2 INSUFF

(2) The units digit of 1,000z is 2.

1000z = a.bcd * 1000 = abcd

The units digit is 1000z of 2, so d = 2 INSUFF

Together (1) and (2) we can not determine the value of c, so INSUFF

Kudos [?]: 63 [0], given: 0

01 Apr 2007, 22:55
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