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densk [106]
3 years ago
8

Paula and Karen are playing a game. Paula counts by 4s. Karen counts by 5s. They try to pace the counting so they will say the f

irst common number together. What is the first number they both say together?
Mathematics
1 answer:
Slav-nsk [51]3 years ago
6 0

Answer:

20

Step-by-step explanation:

We are to determine the lowest common multiple of 4 and 5

the first six multiple of 4 are = 4, 8, 12, 16, 20, 24

the first six multiple of 5 are = 5, 10, 15, 20, 25

the multiple they both have in common is 20

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Step-by-step explanation:

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An arithmetic sequence is a sequence of numbers in which one has to add a value to the previous number to attain the next number.

A simple sequence can be defined as a pattern of numbers, such as a list of multiples.

In the given sequecne:

3, 9, 27, 81, 243

One can see that each element is three times the last. Diving any two consecutive elements (elements next to each other) will result in the numerical value of (3). Therefore this is a geometric sequence since it fits all of the criteria of a geometric sequence and even has a common ratio of (3).

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