Question 1083306
<pre>
  2*4 =    8, then    8 - 1 =    7
  7*4 =   28, then   28 - 2 =   26
 26*4 =  104, then  104 - 3 =  101
101*4 =  404, then  404 - 4 =  400<font color="red"><b> 
400*4 = 1600, then 1600 - 5 = 1595</font></b>

7
7*3 = 21
8
8*3*3 = 72
9<font color="red"><b>
9*3*3*3 = 243</font></b>

Edwin</pre>