Arithmetic Sequence/Series (Junior Cert Mathematics): Quizzes

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Exponential Sequences
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How is each term in an exponential sequence found?

By multiplying previous term by same no.

What is the common ratio?

The number you multiply by each time

In the sequence 2,6,18,54,1622, 6, 18, 54, 162, what is the common ratio?

33

What is 54×354 \times 3 in the sequence 2,6,18,54,1622, 6, 18, 54, 162?

162162

Why do exponential sequences grow or shrink quickly?

Because you're repeatedly multiplying

Which sequence is exponential?

2,6,18,542, 6, 18, 54

What type of sequences must exponential sequences be distinguished from?

Linear and quadratic sequences

If a sequence has common ratio 22 and starts at 55, what is the next term?

1010

In the sequence 2,6,182, 6, 18, what calculation gives the second term?

2×32 \times 3

Which operation defines an exponential sequence?

Repeated multiplication

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