Hi,<br>you will have this problem with any programming language, it is due to float representation in computers.<br>the lonely way is to work with integers and divide by power of 10.<br>11*11/100   .<br><br><br><br>« Envoyé depuis mon mobile » Eric<br><br>张栋 <zd2559@126.com> a écrit :<br><br><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hello the maillist member:<br>I am  new in Erlang,Please Help me.<br><br>When I try some <span class="ordinary-span-edit">multiplication, I got the some</span><span class=""> unexpected</span><span class=""> answer</span><span class="ordinary-span-edit"> about the following expression.<br><br>Please help!<br><br>List:<br><br></span>23> [1.1*1.1,1.1*1.2,1.1*1.3,1.1*1.4,1.1*1.5].<br>[1.2100000000000002,1.32,1.4300000000000002,1.54,<br> 1.6500000000000001]<br><br>24> [1.2*1.2,1.2*1.3,1.2*1.4,1.2*1.5,1.2*1.6].<br>[1.44,1.56,1.68,1.7999999999999998,1.92]<br><br>Thank you for your time.<br><br>Eric D. Zhang In China.<br><br><span class="op_dict3_font24 op_dict3_marginRight"></span></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>