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What is the hundredths digit of th decimal Z?

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What is the hundredths digit of th decimal Z? [#permalink] New post 28 Jan 2012, 07:38
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

56% (01:46) correct 43% (00:35) wrong based on 116 sessions
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
[Reveal] Spoiler: OA

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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] New post 28 Jan 2012, 08:04
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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
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Re: What is the hundredths digit of th decimal Z? [#permalink] New post 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] New post 08 Apr 2012, 02:29
Expert's post
Similar questions to practice:

what-is-the-hundredths-digit-of-the-decimal-m-128272.html
if-a-is-a-positive-integer-and-if-the-units-digit-of-a-2-is-109036.html
what-is-the-hundredths-digit-in-the-decimal-expression-of-104896.html
if-digit-h-is-the-hundredths-digit-in-the-decimal-d-0-2h6-101957.html
what-is-the-tens-digit-of-the-positive-integer-r-101570.html
what-is-the-value-of-the-tenths-digit-of-number-x-1-the-88400.html
what-is-the-hundredths-digit-of-the-decimal-z-93374.html
in-the-decimal-representation-of-x-where-0-x-1-is-the-99281.html

Hope it helps.
_________________

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COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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hundredths digit of the decimal [#permalink] New post 18 Apr 2012, 19:02
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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] New post 20 Aug 2013, 04:47
Expert's post
Re: What is the hundredths digit of th decimal Z?   [#permalink] 20 Aug 2013, 04:47
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