53 003
Assignments Done
97,9%
Successfully Done
In October 2017
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Combinatorics | Number Theory Question for Quamrul

Question #36927
How many three digit numbers can be formed using the digits from 1 to 6 so that the
digits are in increasing order from left to right and for any odd digit appearing in that
number there is at least one even digit placed left to it? One digit can be used only once.
Expert's answer
The first digit can be only even, as there is no digits to the left. Also, it must not be greater then 4 Hence, only two digits can be on the first place: 2 and 4. For 4, there is only one way to construct the increasing order number:

456

For 2:
256
246, 245,
234, 235, 236.

So in total we have 7 such numbers.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be first!

Leave a comment

Ask Your question