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Jun 26th, 2018
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  1. P(X_N) = probabilitatea ca sa ghiceasca de N ori
  2.  
  3. P(RaspunsFavorabil) = P(X_15 + X_16 + X_17 + X_18 + x_19 + X_20)
  4. P(X_N) = Comb(20, N) * (2 ^ (-20))
  5.  
  6. P(RaspunsFavorabil) = (2^(-20)) * (Comb(20, 15) + Comb(20, 16) + Comb(20, 17) + Comb(20, 18) + Comb(20, 19) + Comb(20, 20))
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