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3 votes
Which formula can be used to find the nth term of geometric sequence beow 1/6,1,6,36

User BBonDoo
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2 Answers

1 vote
You just multiply by 6 
User Metalskin
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6.7k points
0 votes
Hey there!

As we can see, our common ratio is 6- as we're multiplying by 6 for every term.

To find the nth term, we use the explicit formula rather than the recursive. The explicit is defined as:

an = a(sub)1 * r^n-1

For the a1, we substitute the first term, and for r we substitute 6.

an = 1/6 * 6^n-1

Hope this helps!
User MiiinimalLogic
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6.1k points
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