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Divisability

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by rishab1988 » Sun Nov 21, 2010 9:48 am
I assume by k u mean x.

If x^4 is divisible by 81 it must have 81= 3*3*3*3. If it doesn't then x^4 will not be divisible by 81.

if x=3 then x^4=3^4. so rem could be 3.

if x=6=2*3 remainder could be 6.

Please provide choices,as this question can have multiple answers.
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by diebeatsthegmat » Sun Nov 21, 2010 6:13 pm
Jinglander wrote:If x^4 is divisible by 81 then which of the following could be the remainder when k is divided by 9
i dont understand this question! where is suddenly a K here?
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