<html> <body dir="rtl"> <p align="right"> <img src="junior1.gif" align="left">1.     4-   -19998,  ""  1.<br>  ""    (    ""+""),  ""   1. <br>  ""  0      ""+"".<br>  ""+""=10  ""=5.<br> 1+1=""      ,  ""=2.<br>  ""+""=12,  ""=6"<br> </p> <hr> <p align="right"> <img src="junior2.gif" align="left"> 2.  : <br><br><br><br><br> </p> <hr> <p> 3.       :<br> 3 : '     1,2 <br> 4 : '      1,3  '  <br> 5 : '     1,4     4     .<br> 6 : '     2,4   4    ,  '  <br> 7 :  '     1,6  2,5,   (   5 -6    ).       3,4.   3    (1,2)   4  2  (1,3 -> 1, 1, 2), " 3   '  ' .<br> 8 : '    1,7  (   7     )<br> </p> <hr> <p dir="ltr"> <img src="cups.gif" align="left"> <align="right"> 4. <br>  ! <br> s - <br> c - <br> () = s-s<sup>2</sup>/(c+s) = sc/(c+s)<br> () = sc/(c+s) - s<sup>2</sup>c/(c+s)<sup>2</sup> = sc<sup>2</sup>/(c+s)<sup>2</sup><br> () = sc/(c+s)<br> </p> <p>  ()=()>() </p> <hr> <p> 5. <img src="junior5.gif" align="left"> <br> </p> </body> </html>