February 25, 2017

Homework Help: Math--PLEASE HELP!!!

Posted by Samantha on Thursday, November 14, 2013 at 9:58am.

Let's begin with a rather straightforward lottery in which players select four digits. The winning number is commonly selected in the following fashion: 10 Ping Pong balls (each with a digit 0 through 9 written on it) are placed in a hopper. One Ping Pong ball is selected. That digit now goes in the first place. That Ping Pong ball is put back in the hopper and the process is repeated three times.

What is the probability of picking a winning number?

Then suppose the Ping Pong ball was not replaced. Now what is the probability?

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