please answer it quickly

Dear Student,

Given Sudoku matrix is:
1                
  2              
      ?          
                 
                 
                 
                 
                 
                 

For row 3, 1 can appear on * marked spaces only.
                 
                 
      * * * * * *
                 
                 
                 
                 
                 
                 

Now 1 has equal chances of being in either of 6 * marked cells.

Thus probability for 1 to be placed in ? marked cell=16
Similarly,  probability for 2 to be placed in ? marked cell=16
Probability of not getting 1 and 2 in ? marked cell=1-16-16=46=23
Also, probability of getting 3,4,5,6,7,8,9 in ? marked cell is same=237=221.
Thus,  probability for 3 to be placed in ? marked cell=221

Hope this information will clear your doubts about topic.

Regards

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