Question 1144410
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<pre>

<U>ANSWER</U>.  (6*5*4*3) * (10*9).


<U>Explanation</U>.  


6 options for the letters in the 1-st position.

5 options for the 5 remaining letters in the 2-nd position.

4 options for the 4 remaining letters in the 3-rd position.

3 options for the 3 remaining letters in the 4-th position.



10 options for the digits in the 5-th position.

 9 options for the 9 remaining digits in the 6-th position.


It gives the answer.
</pre>

You compute the number.


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To see many similar solved problems, look into the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF =https://www.algebra.com/algebra/homework/Permutations/Combinatoric-problems-for-entities-other-than-permutations-and-combinations.lesson>Combinatoric problems for entities other than permutations and combinations</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF =https://www.algebra.com/algebra/homework/Permutations/Miscellaneous-problems-on-permutations-combinations-and-other-combinatoric-entities.lesson>Miscellaneous problems on permutations, combinations and other combinatoric entities</A> 

in this site.


After reading these lessons, you will be trained in solution such problems and will get more confidence.



Also, &nbsp;you have this free of charge online textbook in ALGEBRA-II in this site

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-II - YOUR ONLINE TEXTBOOK</A>.


The referred lessons are the part of this online textbook under the topic &nbsp;"<U>Combinatorics: Combinations and permutations</U>". 



Save the link to this textbook together with its description


Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson


into your archive and use when it is needed.