A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 13 characters long, and that each character is either a lowercase letter, (a, b, c, etc), an uppercase letter (A, B, C, etc) or a numerical digit (0, 1, 2, 3, 4, 5, 6, 7, 8, or 9). Assume that the hacker makes random guesses.What is the probability that the hacker guesses the password on his first try? Enter your answer as a decimal or a fraction, not a percentage.

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Q: Consider a collection of envelopes consisting of 3 red envelopes, 2 blue envelopes, 2 green…

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Q: A pet store has 14 ​puppies, including 5 ​poodles, 5 ​terriers, and 4 retrievers. If Rebecka and​…

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Q: In a black bowl contains 10 red balls and 10 yellow balls. One person selects balls at random…

A: Given Information :  In a black bowl contains 10 red balls and 10 yellow balls . One person selects…

Q: Suppose that 71% of the surface of the Earth is covered in water, and a random number generator uses…

A:

Q: Consider a political discussion group consisting of 6 ​Democrats, 7 Republicans, and 4 Independents.…

A: Given,  Consider a political discussion group consists of Democrats=6 Republicans=7 Independents=4…

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Q: Suppose that a code (similar to a postal code) is of the form LDL DLD, where 'L' is an uppercase…

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Q: Amarble is selected at random from a jar containing 2 red marbles, 3 yellow marbles, and 4 green…

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Q: How could you use a​ random-digit generator or​ random-number table to simulate rain if you knew…

A: Given How could you use a​ random-digit generator or​ random-number table to simulate rain if you…

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A:

Q: 8. An online shopping cart password consists of FIVE (5) alphabets, both lower case and uppercase…

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Q: Suppose that the probability is 0.63 that a car stolen in a certain Western city will be recovered.…

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Q: You are going to choose a number randomly from the set {1, 2, 3, ... 23, 24}. What is the…

A: Let us define some events A : a number is divisible by 4 B : a number is multiple of 5 The possible…

Q: How could you use a random-digit generator or  random-number table to simulate rain if you knew that…

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Q: 19. What is the probability that a number selected at random from the first 50 positive integers is…

A: GivemTotal no.of positive integers = 50

Q: Peter and Tom are playing a game where each of them alternately chooses at random an integer between…

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Q: USA Today reported that about 20% of all people in the United States are illiterate. Suppose you…

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Q: Suppose the probability of erroneously transmitting a single digit is P = 0.03. Computethe…

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A:

Q: Suppose we want to form three-digit numbers using the set of digits [0,1,2,3,4,5). For example, 501…

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Q: Suppose that jurors are selected randomlyfrom an adult population. What is the proability that all…

A: Given data, n=12 p=80%=0.80 P(X=12)=?

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Q: Suppose an integer from 100 through 1,000 is chosen at random, what is the probability that the…

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Q: The pool of students in a calculus class consist of 22 sophomore and 8 freshmen. If seven students…

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Q: In a group of n women and n men, how many people must be selected at random from the total 2n…

A:

Q: How could you use a random-digit generator or random-number table to simulate rain if you knew that…

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Q: A bowl contains 10 red balls and 10 blue balls. A person selects balls at random without looking at…

A: No. of Red balls = 10 No. of Blue balls = 10 a) having at least 3 balls of same colour If a person…

Q: What is the probability that the integer chosen is divisible by atleast one of the numbers 2,4,6,7?

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Q: An integer is chosen at random from the first two lundred digits. What is the probability that the…

A:

Q: Suppose that 10% of a certain batch of calculators have a defective case, and that 18% have…

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Q: Consider a political discussion group consisting of 9 Democrats, 8 Republicans, and 2 Independents.…

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Q: ou randomly select an integer from 0 to 24 inclusively and then randomly select an integer from 0 to…

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Q: How could you use a random-digit generator or random-number table to simulate rain if you knew that…

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Q: 2. Find the probability that the first two show odd numbers, the next two show perfect squares, and…

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Q: The generated code is 7 digits.The first three digits are created by selecting 3 different letters…

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Q: On a tv quiz show, a contestant is asked to pick an integer at random from the first 100 consecutive…

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Q: How many permutations are there of the letters in the word 'CLOTH', if all the letters are used…

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Q: Suppose that 71% of the surface of the Earth is covered in water, and a random number generator uses…

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.