MXS
*ANN
-------------
XKNM
XKNM*
WXZW**
-------------
AWEKXM

• X must be greater than 4 since carry is generated, i.e, W+1=A.
  now apply hit n trial method with no carry , 1 carry n then 2 carry on X+X=W.
  We will find only carry 2 satisfies. i.e. 2+x+x=w. i.e 2+5+5=12. so x=5 and w=2 and then 1 carry is generated so consequently w+1=A. i.e 1+2=3. So A=3
  MXS*A=WXZW. ie M5S*3=25Z2.
  now , 3*s=2 so s must be 4. and
  then wx=25 so 3 * 8 + carry 1=25.
  NOW, MXS*N=854*N.
  NOw see all d digits have been used except 7,9 so 1st replace N with 7 then proceed .
  
  854
  *377
  ____
  5978
  5978
  2562
  _____
  321958
  
• 9 years agoHelpfull: Yes(18) No(5)
• fist start with the clue : w+1=A
  now;
  A * S=W
  3 * 4=2
  7 * 8=6
  9 * 2=8
  now ;
  
  M X S
  A
  -----------
  W X Z W
  
  so try with A=3 and s=4 so w =2;
  so if w=2 then x can be 5 (if carry is 2)or 6(if carry is 0);
  (X+X+carry=W);
  
  now proceed with X=5;
  
  I hope this much is sufficient for whom who wants hint only ;
  
• 9 years agoHelpfull: Yes(10) No(4)
• 854
  *377
  --------------
  5978
  5978-
  2562--
  --------------
  321958
• 9 years agoHelpfull: Yes(5) No(2)
• 854*377
  
  
  5978
  5978-
  2562--
• 9 years agoHelpfull: Yes(1) No(2)