document.write( "Question 1196823: You have just been assigned a random 4-digit password made up of digits from 0 to 9. What is the probability that your password starts with a 3? Repetition is not allowed. \n" ); document.write( "
Algebra.Com's Answer #829826 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Without restrictions, there are 10 possibilities for the first digit. \n" ); document.write( "With the restriction, there is only 1 possibility: the first digit must be 3. \n" ); document.write( "So the probability that the first digit is 3 is 1/10. \n" ); document.write( "And after the first digit there are no further restrictions; the probability is 1 that the last three digits satisfy the conditions. \n" ); document.write( "ANSWER: (1/10)*1 = 1/10 \n" ); document.write( " \n" ); document.write( " |