Homework Help: finite math

Posted by allen on Tuesday, September 4, 2012 at 7:51pm.

suppose that 3 digits are selected at random from the set S={1,2,3,4,5,6} and are arranged in random order. Find the probability that the resulting 3-digit number is less than 300.

finite math - Reiny, Tuesday, September 4, 2012 at 8:59pm
Can digits be repeated?
I will assume they CANNOT

number of possible 3 digit numbers
= 6*5*4 = 120

to be less than 300, the number must start with either a 1 or a 2
number of such cases = 2*5*4 = 40

prob of event = 40/120 = 1/3

Answer this Question

Related Questions

Finite Math - Assume that 3 digits are selected at random from the set {1,3,5,6,...
math - Assume that 3 digits are selected at random from the set { 2, 5, 6, 8, 9...
Computer Science - public class RandomPhoneNumber { public static void main(...
Finite - Assume that the box contains balls numbered from 1 through 28, and that...
stats please help test tom - When a computerized generator is used to generate ...
college - Four hundred people apply for three jobs. 130 of the applicants are ...
Math - Three different numbers are chosen at random from the set {1,2,3,4,5}. ...
Math - Three different numbers are chosen at random from the set {1,2,3,4,5}. ...
math - Three dierent numbers are chosen at random from the set f1; 2; 3; 4...
PROBABILITY MATH - Suppose one card is selected at random from an ordinary deck ...

For Further Reading

First Name:
School Subject:
Answer: