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07 Jan 2020, 00:57
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Hi miak ..
Welcome to GMATclub. Please check our posting rules HERE before posting.
For your answer:
when a positive number X is divided by 3 the remainder is 2 - Examples of X can be 5, 8, 11, etc.
remainder when the square of X is divided by 3 - Examples of \(X^2\) will be 25, 64, 121. The remainder will come 1.
Welcome to GMATclub. Please check our posting rules HERE before posting.
For your answer:
when a positive number X is divided by 3 the remainder is 2 - Examples of X can be 5, 8, 11, etc.
remainder when the square of X is divided by 3 - Examples of \(X^2\) will be 25, 64, 121. The remainder will come 1.
miak
when a positive number X is divided by 3 the remainder is 2. find the remainder when the square of X is divided by 3
07 Jan 2020, 10:03
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when a positive number X is divided by 3 the remainder is 2. find the remainder when the square of X is divided by 3
X = 3q+2, X can be 2, 8, 11, 14,,,
X2=3q+r, if X = 2, X2=4, r=1,
If X = 8, X2=64, r=1,
If, X = 11, X2= 121, r=1
So, same pattern repeats.
Posted from my mobile device
X = 3q+2, X can be 2, 8, 11, 14,,,
X2=3q+r, if X = 2, X2=4, r=1,
If X = 8, X2=64, r=1,
If, X = 11, X2= 121, r=1
So, same pattern repeats.
Posted from my mobile device
