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3 years ago

Over the next week you want to watch a movie a day. In how many ways can this be done if you have 8 movies

2 answers:

7 0

<span>You can select from any of the 8 on the first day, leaving 7 to choose from on the second day, leaving 6 for the third. So, 8 x 7 x 6 x 5 x 4 x 3 x 2 or 8! That's 8factorial, so multiply those out or use a calculator to get 8! and that is your answer.</span>

tamaranim1 [39]3 years ago

6 0

Answer:

40,320

Step-by-step explanation:

8 x 7 x 6 x 5 x 4 x 3 x 2

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Trees are planted at intervals of 5 m along side of a 140 m straight path. The first tree is planted at the start of the path an

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<h3>Solution :</h3>

Distance between first tree and last tree is 140m .

And distance between each tree (d) = 5 m

let's solve for number of trees (n) :

$\hookrightarrow \: (n - 1)d = 140$

$\hookrightarrow \: (n - 1)5 = 140$

$\hookrightarrow \: n - 1 = \dfrac{140}{5}$

$\hookrightarrow \: n = 28 + 1$

$\hookrightarrow \: n = 29$

hence, total number of trees = 29.

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