<p>if j, k, and n are consecutive integers such that
0> j >k >n and the units (ones) digit of the product<br>
jnis 9, what is the units digit of k ? </p>
<p>choices are 0, 1, 2, 3, 4</p>
<p>when i looked at the explanations it said, k is 0!!!!!</p>
<p>i dont get it, help plz</p>
<p>let j = -9
let k = -10
let n = - 11</p>
<p>jn = 99; units digit is 9
units digit of k = 0</p>
<p>WoWWWW</p>
<p>thanks alot</p>
<p>knowing that, couldnt u also have done </p>
<p>11
10
9</p>
<p>that comes out to be 9 as well?</p>
<p>anyways thank u</p>
<p>No, because they all have to be less than zero.</p>