MathDB

22

Part of 1999 National Olympiad First Round

Problems(1)

Turkish NMO First Round - 1999 P-22 (Number Theory)

Source:

7/3/2012
If m,n∈Z m,n\in Z, then m^{2} \plus{} 3mn \minus{} 4n^{2} cannot be
<spanclass=′latex−bold′>(A)</span> 69<spanclass=′latex−bold′>(B)</span> 76<spanclass=′latex−bold′>(C)</span> 91<spanclass=′latex−bold′>(D)</span> 94<spanclass=′latex−bold′>(E)</span> None<span class='latex-bold'>(A)</span>\ 69 \qquad<span class='latex-bold'>(B)</span>\ 76 \qquad<span class='latex-bold'>(C)</span>\ 91 \qquad<span class='latex-bold'>(D)</span>\ 94 \qquad<span class='latex-bold'>(E)</span>\ \text{None}