A thief steals an ATM card and must randomly guess the correct five ​-digit pin code from a 4 ​-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first​ try? The number of possible codes is nothing . ​(Type an integer or fraction. Simplify your​ answer.) The probability that the correct code is given on the first try is nothing . ​(Type an integer or fraction. Simplify your​ answer.)

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Q: A thief steals an ATM card and must randomly guess the correct three-digit pin code from a 10-key…

A: It is 10-key keypad and hence it has 10 numbers.

Q: A thief steals an ATM card and must randomly guess the correct five​-digit pin code from a 5​-key…

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A: Given :  Available digits = 5,6,7,8

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A: The ATM card contains four-digit pin code. There are 4-key keypad.

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A: Number of possible codes = 7*7*7 = 343 Therefore the answer is 343.

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A: Given  Total number of letters = 18 n(I) = 2 n(L) = 2 n(  A) = 3 n(S) =  2 n(E) = 3 n( drawn) =  1

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