Visit http://hseb.ntc.net.np/
Type your symbol number (Example :- 02071382) in the input box above and click submit
Your result will appear on the screen

IVR System (From PSTN and CDMA phones)
Dial 1601 and follow the instructions
                                       http://www.hseb.edu.np/result/grade-xii-science-results-regular-2072