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If x is a decimal, What is the hundredths digit of x?

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Manager
Joined: 25 Sep 2018
Posts: 186
Location: United States (CA)
Concentration: Finance, Strategy
GMAT 1: 640 Q47 V30
GPA: 3.97
WE: Investment Banking (Investment Banking)
If x is a decimal, What is the hundredths digit of x?  [#permalink]

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Updated on: 03 Oct 2018, 01:56
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Difficulty:

45% (medium)

Question Stats:

56% (01:16) correct 44% (01:11) wrong based on 50 sessions

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If x is a decimal, What is the hundredths digit of x?

1. The units digit of $$(x10^2)$$ is 7
2. The thousands digit of $$(x10^4)$$ is7

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Originally posted by Abhi077 on 02 Oct 2018, 11:48.
Last edited by Abhi077 on 03 Oct 2018, 01:56, edited 1 time in total.
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Re: If x is a decimal, What is the hundredths digit of x?  [#permalink]

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03 Oct 2018, 00:12
Abhi077 wrote:
If x is a decimal, What is the hundredths digit of x?

1. The units digit of $$(n10^2)$$ is 7
2. The thousands digit of $$(n10^4)$$ is7

I think n should be replaced by x
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Manager
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WE: Investment Banking (Investment Banking)
Re: If x is a decimal, What is the hundredths digit of x?  [#permalink]

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03 Oct 2018, 01:56
Just did it. sorry about that I didn't realize
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Re: If x is a decimal, What is the hundredths digit of x?  [#permalink]

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10 Oct 2018, 12:18
Can we have the OA solution? I feel really lost and don't know how to even tackle this question...
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If x is a decimal, What is the hundredths digit of x?  [#permalink]

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10 Oct 2018, 12:32
1
Abhi077 wrote:
If x is a decimal, What is the hundredths digit of x?

1. The units digit of $$(x10^2)$$ is 7
2. The thousands digit of $$(x10^4)$$ is7

Let x = 0.abcd

Tenths digit is a
Hundredths is b

If x*10^2 = 7
That means 0.abcd = ab.cd
B is the units digit and that equals 7.

Sufficient.

Now for statement 2)
0.abcd * 10^4 = abcd

That means a is 7. We are not looking for a rather we are looking for b.

Insufficient.

aanjumz92 please check the above solution and see if it helps you.

Posted from my mobile device
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Joined: 06 Oct 2017
Posts: 44
GPA: 3.6
If x is a decimal, What is the hundredths digit of x?  [#permalink]

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10 Oct 2018, 13:51
Salsanousi wrote:
Abhi077 wrote:
If x is a decimal, What is the hundredths digit of x?

1. The units digit of $$(x10^2)$$ is 7
2. The thousands digit of $$(x10^4)$$ is7

Let x = 0.abcd

Tenths digit is a
Hundredths is b

If x*10^2 = 7
That means 0.abcd = ab.cd
B is the units digit and that equals 7.

Sufficient.

Now for statement 2)
0.abcd * 10^4 = abcd

That means a is 7. We are not looking for a rather we are looking for b.

Insufficient.

aanjumz92 please check the above solution and see if it helps you.

Posted from my mobile device

That makes so much sense thank you SO VERY MUCH! I think my issue was being unable to think mentally of x as 0.abcd
If x is a decimal, What is the hundredths digit of x?   [#permalink] 10 Oct 2018, 13:51
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