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

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If x is a decimal, What is the hundredths digit of x?  [#permalink]

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New post Updated on: 03 Oct 2018, 01:56
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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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New post 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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Re: If x is a decimal, What is the hundredths digit of x?  [#permalink]

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New post 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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New post 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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New post 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.

Answer choice A

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

Posted from my mobile device
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If x is a decimal, What is the hundredths digit of x?  [#permalink]

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New post 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.

Answer choice A

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
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If x is a decimal, What is the hundredths digit of x? &nbs [#permalink] 10 Oct 2018, 13:51
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If x is a decimal, What is the hundredths digit of x?

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