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Devising a Plan: Solution

Devising a Plan: Solution

Devise a plan to solve the problem.

We'll cover the following...

We have our strategy. Now, we can try to solve our problem.

Solution

Further investigating the problem reveals the following information.

No. of Bulbs

No. of Arrangements

1

2

2

4

3

8

4

16

5

32

Does any pattern seem to emerge from these observations?

Q

What is the correct identification of the pattern?

A)

The count of arrangements is four times the number of bulbs.

B)

The count of arrangements is twice the number of bulbs.

C)

The number of arrangements doubles with each additional bulb.

D)

There isn’t a clearly defined relationship between the two.

So, let’s devise a formula to relate the number of bulbs to the number of arrangements.

No. of Bulbs

No. of Arrangements

1

2 = 2 = 21

2

4 = 2 x 2 = 22

3

8 = 2 x 2 x 2 = 23

4

16 = 2 x 2 x 2 x 2 = 24

5

32 = 2 x 2 x 2 x 2 x 2 = 25

From the table, we can derive the following general formula:

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