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irina [24]
3 years ago
9

Is the statement ""For every natural number n ≥ 1 there exists a directed graph of n vertices for which every vertex has an inde

gree equal to its outdegree"" TRUE or FALSE?
Mathematics
1 answer:
Semenov [28]3 years ago
5 0

Answer:

The given statement is false.

Step-by-step explanation:

Reason

let D be a directed graph with 'n' no of vertices and 'E' edges.

where 'n'=1.  thus D =(n,E).

In degree: in directed graph the number of incoming edges on a vertex is known as indegree.

it is denoted as deg ⁺(n).

And now we know that in a directed graph

if deg ⁻(n)= deg ⁺(n) for each vertex n.

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I am 10% older than my wife,my wife is x% younger than i am find x<br>​
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--> 9.09% younger

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5 0
3 years ago
Solve by using the elimination method.
crimeas [40]

a = lilies

13 - a = tulips

We have: 1.25a + 0.90(13 - a) = 14.85

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=> She bought 9 lilies and 4 tulips

             

4 0
3 years ago
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