<p>1,000< r < s < 10,000</p>
<p>In the inequality above, r and s are integers. If the thousands digit of r is equal to the thousands digit of s, what is the greatest possible value of s-r?
A) 9009
B) 999
C) 990
D) 909
E). 900</p>
<p>and this one plz [Math</a> Forum - Ask Dr. Math](<a href=“Classroom Resources - National Council of Teachers of Mathematics”>Classroom Resources - National Council of Teachers of Mathematics)</p>
<p>Answer to the first is B. It says that the thousands digit is the same between r and s. U want the largest possible diff of s-r. So assume s as the largest you can. Lets say 2,999. Now assume r as the lowest. Since s has 2 in the thousands place, the lowest value of r is 2000. 2,999-2000=999</p>
<p>thnx muhammad 9211 but wbu the second one ?</p>
<p>Since angles AOB and APB are 120 degrees, arcs AOB and APB each make 1/3 of a circle. You should be able to figure the rest out…</p>
<p>thnx u 
i got it< !!!</p>