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Some one who knows about this that can help me...​

Some one who knows about this that can help me...​-example-1
User HossBender
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1 Answer

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Starting with the 0th term the first 4 terms, would be 0, 1, 2, 3

Replace x with each term number and solve:

The answers are: 2, 10, 50, 250

User Meteor
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