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What is the hundredths digit of th decimal Z? [#permalink ]
28 Jan 2012, 07:38
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What is the hundredths digit of th decimal Z? (1) The tenths digit of 100z is 2 (2) The units digit of 1,000z is 2

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Last edited by

Bunuel on 08 Apr 2012, 02:12, edited 2 times in total.

Edited the question and added the OA

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
28 Jan 2012, 08:04
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Re: What is the hundredths digit of th decimal Z? [#permalink ]
28 Jan 2012, 15:21

Bunuel wrote:

What is the hundredths digit of the decimal z? Let's say z=a.bcd . The hundredths digit of z would be the value of c . So the question is c=? (1) The tenths digit is 100z is 2 --> 100z=100*a.bcd=abc.d --> the tenths digit of 100z is the value of d . So d=2 . Not sufficient to calculate c . (2) The units digit of 1,000z is 2 --> 1000z=1000*a.bcd=abcd --> the units digit of 1000z is the value of d . So d=2 . Not sufficient to calculate c . (1)+(2) No new info, only the value of d is known. Not sufficient. Answer: E. Note: 1234.567 1 - THOUSANDS 2 - HUNDREDS 3 - TENS 4 - UNITS . - decimal point 5 - TENTHS 6 - HUNDREDTHS 7 - THOUSANDTHS

I got E, just want to confirm

My Exam is on Coming Friday..Any Advise Please i need atleast 650

Thanks a lot..

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
08 Apr 2012, 02:29

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hundredths digit of the decimal [#permalink ]
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z = 0.abcd and we are looking for b 1. 100z = ab.cd c = 2 (insufficient) 2. 1,000z = abc.d c = 2 (insufficient)

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
20 Aug 2013, 04:47

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
28 Apr 2014, 20:09

Bunuel wrote:

What is the hundredths digit of the decimal z? Let's say z=a.bcd . The hundredths digit of z would be the value of c . So the question is c=? (1) The tenths digit is 100z is 2 --> 100z=100*a.bcd=abc.d --> the tenths digit of 100z is the value of d . So d=2 . Not sufficient to calculate c . (2) The units digit of 1,000z is 2 --> 1000z=1000*a.bcd=abcd --> the units digit of 1000z is the value of d . So d=2 . Not sufficient to calculate c . (1)+(2) No new info, only the value of d is known. Not sufficient. Answer: E. Note: 1234.567 1 - THOUSANDS 2 - HUNDREDS 3 - TENS 4 - UNITS . - decimal point 5 - TENTHS 6 - HUNDREDTHS 7 - THOUSANDTHS

Hi Bunnel,

I got E for this.

I have a doubt if I will use a.bc then in statement1 I can get the hundreaths digit.

Please clarify.

Thanks.

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Re: hundredths digit of the decimal [#permalink ]
28 Apr 2014, 20:12

calreg11 wrote:

z = 0.abcd and we are looking for b 1. 100z = ab.cd c = 2 (insufficient) 2. 1,000z = abc.d c = 2 (insufficient)

why we will take 4 digits. can we take 0.abc?

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
28 Apr 2014, 20:13

Bunuel wrote:

What is the hundredths digit of the decimal z? Let's say z=a.bcd . The hundredths digit of z would be the value of c . So the question is c=? (1) The tenths digit is 100z is 2 --> 100z=100*a.bcd=abc.d --> the tenths digit of 100z is the value of d . So d=2 . Not sufficient to calculate c . (2) The units digit of 1,000z is 2 --> 1000z=1000*a.bcd=abcd --> the units digit of 1000z is the value of d . So d=2 . Not sufficient to calculate c . (1)+(2) No new info, only the value of d is known. Not sufficient. Answer: E. Note: 1234.567 1 - THOUSANDS 2 - HUNDREDS 3 - TENS 4 - UNITS . - decimal point 5 - TENTHS 6 - HUNDREDTHS 7 - THOUSANDTHS

can we tabke a.bc instead of a.bcd. then this will not work.

Please clarify

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Re: What is the hundredths digit of th decimal Z? [#permalink ]
29 Apr 2014, 00:07
PathFinder007 wrote:

Bunuel wrote:

What is the hundredths digit of the decimal z? Let's say z=a.bcd . The hundredths digit of z would be the value of c . So the question is c=? (1) The tenths digit is 100z is 2 --> 100z=100*a.bcd=abc.d --> the tenths digit of 100z is the value of d . So d=2 . Not sufficient to calculate c . (2) The units digit of 1,000z is 2 --> 1000z=1000*a.bcd=abcd --> the units digit of 1000z is the value of d . So d=2 . Not sufficient to calculate c . (1)+(2) No new info, only the value of d is known. Not sufficient. Answer: E. Note: 1234.567 1 - THOUSANDS 2 - HUNDREDS 3 - TENS 4 - UNITS . - decimal point 5 - TENTHS 6 - HUNDREDTHS 7 - THOUSANDTHS

can we tabke a.bc instead of a.bcd. then this will not work.

Please clarify

Please show your work.

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Re: What is the hundredths digit of th decimal Z?
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29 Apr 2014, 00:07