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Find the number of 3-letter sequences that can be made using the letters in the word MICHIGAN.

 Jun 10, 2020
 #1
avatar+1193 
+1

Note that there are two I's.

 

Split it into two cases: one where you find the number of sequences with MICHGAN, and one where you have two I's and one other letter. These two are different. From there I bet you can figure it out, ask if you have questions!

 

You are very welcome!

:P

 Jun 10, 2020
 #2
avatar+14 
+2

There are 8 letters in Michigan, so we should be able to pick 3 numbers from 8(8*7*6), but keep in mind that there are too I's. 

 Jun 11, 2020

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