package com.xaygc; |
public class fortest { |
public static void main(String args[]){ |
int i,j,pat,sum= 0 ; |
for (i= 1 ;i<= 20 ;i++){ |
pat= 1 ; |
for (j= 1 ;j<=i;j++){ |
pat=pat*j; |
} |
sum=sum+pat; |
} |
System.out.println( "1!+2!+3!+....+20!=" +sum); |
} |
} |
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