SOLUTION: You pick 2 digits (0-9) at random without replacement, and write them in the order picked.
What is the probability that you have written the first 2 digits of your phone number?
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-> SOLUTION: You pick 2 digits (0-9) at random without replacement, and write them in the order picked.
What is the probability that you have written the first 2 digits of your phone number?
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Question 626594: You pick 2 digits (0-9) at random without replacement, and write them in the order picked.
What is the probability that you have written the first 2 digits of your phone number? Assume there are no repeats of digits in your phone number.
Give your answer as a fraction. Answer by richard1234(7193) (Show Source):
You can put this solution on YOUR website! There are 10*9 = 90 different strings of two digits (ordered). Only one of them will be the first two digits of your number. Therefore the probability is 1/90.
