00314nam a2200121 a 450000500170000000800410001705000200005810000180007824500160009626000450011265000160015765000190017320140414131849.0100728s19uu    xx            00    eng d  aM 510bB62 2003  aBlum, Raymond  aMathemania.  aNew Delhi, India :bGoodwill pub,c2003.  aMathematics  aSolving tricks