m+n mode 12 is 8, m-n mod 12 is 6. m*n mode 12 will be?

• answer:7.
  if m=13 & n=7,then
  (13+7)mod 12=8;
  (13-7)mod 12=6;
  (13*7)mod 12=7;
• 11 years agoHelpfull: Yes(27) No(0)
• no are 26 and 6 so..
  156 mode 12
  0
• 11 years agoHelpfull: Yes(1) No(9)
• m+n=8,m-n=6
  2mn=(m+n)2-(m-n)2
  mn=ans/2
  ans=14
• 11 years agoHelpfull: Yes(1) No(6)
• ans:7 because,
  let m=19,n=1 then
  m+n mod 12=8
  m-n mod 12=6
  m*n mod 12=7
• 9 years agoHelpfull: Yes(0) No(1)