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James Chen TMUA Paper 2 · Q17

Paper 2Number & counting

Alice and Bob are playing a game of Number Wordle. The answer they are trying to guess is a 5 digit number with no repeated digits. When they make a guess, a digit turns gray if it is not present in the answer, green if it is in the correct position, and yellow if it is in the answer but not the correct position. Alice guesses 67041 and then Bob guesses 23589, and the results are shown below:

How many possible answers are there? Diagram for question 17

A11
B22
C55
D66
E77
F88
G99
H1010
I1111
J1212

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