Let p be a prime number larger than 2. Suppose we uniformly sample for two times with replacement from {0,.., p-1}. Then multiply these two numbers with each other in (mod p) space. What is the probability of getting (p-1)/2?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 9ECP: A random number generator selects two integers from 1 to 30. What is the probability that both...
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Let p be a prime number larger than 2. Suppose
we uniformly sample for two times with
replacement from {0,..., p-1}. Then multiply
these two numbers with each other in (mod p)
space. What is the probability of getting (p-1)/2?
Transcribed Image Text:Let p be a prime number larger than 2. Suppose we uniformly sample for two times with replacement from {0,..., p-1}. Then multiply these two numbers with each other in (mod p) space. What is the probability of getting (p-1)/2?
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