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Trevor has a secret number composed of 2 digits that are not repeated what is the probability of someone guessing trevor's number? and explain ??

Respuesta :

22 digits that means it goes from 10-99, excluding numbers such as 11, 22, 33, 44, 55, 66, 77, 88, 99. Therefore, the amount of secret numbers is 81. The probability of someone guessing it is 1/81.