Question 1155252
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In total, there are  9 + 5 + 4 + 2 = 20 tokens.


With the probability  {{{5/20}}}  we select blue token at the first draw;


and then with the probability  {{{4/19}}}  we select blue token at the second draw.


Therefore, the answer to the problem's question is  P = {{{(5/20)*(4/19)}}} = {{{20/(20*19)}}} = {{{1/19}}}.  
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