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Given that p is a positive even integer with a positive

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VP
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Joined: 07 Dec 2014
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Re: Given that p is a positive even integer with a positive  [#permalink]

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New post 01 Mar 2018, 17:24
u2lover wrote:
Given that p is a positive even integer with a positive units digit, if the units digit of p^3 minus the units digit of p^2 is equal to 0, what is the units digit of p + 3?

A. 3
B. 6
C. 7
D. 9
E. It cannot be determined from the given information.


all exponential values of 6 have a units digit of 6
6^3=216
6^2=36
6+3=9
D
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Re: Given that p is a positive even integer with a positive  [#permalink]

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New post 05 Oct 2018, 09:30
u2lover wrote:
Given that p is a positive even integer with a positive units digit, if the units digit of p^3 minus the units digit of p^2 is equal to 0, what is the units digit of p + 3?

A. 3
B. 6
C. 7
D. 9
E. It cannot be determined from the given information.


5 and 6 are the two numbers that to whatever power they are other than 0, the units digit will be 5 or 6.

Since p is positive even integer. meaning it is 6.

6 + 3 = 9

Answer choice D
GMAT Club Bot
Re: Given that p is a positive even integer with a positive &nbs [#permalink] 05 Oct 2018, 09:30

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