Thursday
March 5, 2015

Homework Help: Math

Posted by Ann on Wednesday, January 5, 2011 at 5:29pm.

How many odd four-digit numbers, all of the digit different can be formed from the digits 0 to 7, if there must be a 4 in the number?

My Answer:

There are four options for the last digit (1, 3, 5, or 7). One of the other three digits only has 1 option (for the 4). One of the other remaining digits will have 6 options and the final digit will have 5 options (because they can't repeat the first two) Therefore, the answer is:

4*1*5*6=120

I do not have much confidence in my answer. Could someone please tell me if I did this right? Thanks for your help.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math (Reiny) - Regarding my question below, when the question talks about digits...
Math - Received answer to the following question from Jishka. (2469) Would you ...
Math Help Please - Can you Please explain the answer that I received of 2469? It...
MATH - Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, ...
Math - Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, ...
Math - Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you can arrange four ...
college math - How many different four-digit numbers can be formed from the ...
math - how many different positive four-digit integers can be formed if the ...
Math Help Please - Would you please explain the steps you used to get the answer...
math - given the digits 0,1,2,3,4,5,6, and 7 find the number of possibilities in...

Members