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Arithmetic Series/Geo Sequence

Last updated almost 5 years ago

3 questions

1

Question 1

1.

Find the sum of the first 21 terms. (-11) + (-7) + (-3) + ...

1

Question 2

2.

Find the sum of the series 5 + 9 + 13 + ... + 201

1

Question 3

3.

Fill in the missing terms of the geometric sequence , , 3, , _, 375 using the equation: