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# If z is a positive integer and r is the remainder when z^2 + 2z + 4 is

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If z is a positive integer and r is the remainder when z^2 + 2z + 4 is  [#permalink]

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06 Jul 2018, 01:23
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If z is a positive integer and r is the remainder when z^2 + 2z + 4 is divided by 8, what is the value of r?

1. When (z−3)^2 is divided by 8, the remainder is 4.

2. When 2z is divided by 8, the remainder is 2.

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Re: If z is a positive integer and r is the remainder when z^2 + 2z + 4 is  [#permalink]

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06 Jul 2018, 01:38
QZ wrote:
If z is a positive integer and r is the remainder when z^2 + 2z + 4 is divided by 8, what is the value of r?

1. When (z−3)^2 is divided by 8, the remainder is 4.

2. When 2z is divided by 8, the remainder is 2.

Discussed here: https://gmatclub.com/forum/if-z-is-a-po ... 48360.html
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Re: If z is a positive integer and r is the remainder when z^2 + 2z + 4 is &nbs [#permalink] 06 Jul 2018, 01:38
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# If z is a positive integer and r is the remainder when z^2 + 2z + 4 is

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