The order of the members is important (because each selected member will receive a different position), thus we then need to use the definition of permutation.

There are 25 members, of which 3 are selected.

$\begin{array}{l}n=25 \\r=3\\end{array}$

Evaluate the definition of a combination:

$P(25,3)=\frac{25 !}{(25-3) !}=\frac{25 !}{22 !}=25 \cdot 24 \cdot 23=13800$

8 0

3 years ago

What is the equivalent of 243 to the power of (2/5)

nasty-shy [4]

(243)^(2/5) = ?
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The 5 in the denominator means "take the 5th root".
The 2 in the numerator means "square".

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Taking the 5th root first you get:
(243)^(2/5) = 3^2
Now squaring gives you
3^2 = 9

So the answer is 9.

Hope this helps :)
~Davinia.

6 0

3 years ago

Can someone please help me with this!

Virty [35]

The answer for number 3 is 3.c

5 0

3 years ago

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