Krishnan, B. N. R. <br/><br/>
Solve the problems in short - cut methods / 
by B. N. R. Krishnan 
 - Chennai :  Sura College of Competition,  2012. 
<br/><br/><label>ISBN: </label>8172540345 
<br/><br/><label>Subjects--Index Terms: </label>Mathematics - Short Cuts