## Exam-Style Question on Sequences## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 39. This question is similar to one that appeared on an IB Standard paper in 2014. The use of a calculator is not allowed.

In an arithmetic sequence, the fifth term is 44 and the ninth term is 80.

(a) Find the common difference.

(b) Find the first term.

(c) Find the sum of the first 50 terms of the sequence.

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