J jshaziza Junior Member Joined Jan 26, 2007 Messages 102 Sep 13, 2007 #1 How many three-digit numbers can you form from the digits 1,2,3,4,5,6 if a. the digits can be repeated; b. the digits cannot be repeated. I am having trouble figuring this out, can someone please help me. thx.
How many three-digit numbers can you form from the digits 1,2,3,4,5,6 if a. the digits can be repeated; b. the digits cannot be repeated. I am having trouble figuring this out, can someone please help me. thx.
D Deleted member 4993 Guest Sep 14, 2007 #2 Re: Combinotorics jshaziza said: How many three-digit numbers can you form from the digits 1,2,3,4,5,6 if a. the digits can be repeated; b. the digits cannot be repeated. I am having trouble figuring this out, can someone please help me. thx. Click to expand... For all of those consider How many ways you can write the first digit? How many ways you can write the second digit? How many ways you can write the third digit? All these are independent events - so you multiply those three events.
Re: Combinotorics jshaziza said: How many three-digit numbers can you form from the digits 1,2,3,4,5,6 if a. the digits can be repeated; b. the digits cannot be repeated. I am having trouble figuring this out, can someone please help me. thx. Click to expand... For all of those consider How many ways you can write the first digit? How many ways you can write the second digit? How many ways you can write the third digit? All these are independent events - so you multiply those three events.
