This study aims to obtain a description of the problem-solving process of students at SMA Negeri 1 Ogodeide in solving word problems on arithmetic sequences and series. Problem-solving needs to be analyzed so that teachers can understand students' problem-solving abilities. This research uses a qualitative descriptive method. Data were obtained from written tasks and student interviews. The results show that the problem-solving analysis of students with rational (MS) and artisan (SM) personality types fulfilled all problem-solving indicators, namely understanding the problem, devising a plan, carrying out the plan, and looking back. The problem-solving analysis of the student with a guardian personality type (AH) only fulfilled two indicators, namely understanding the problem and devising a plan. The problem-solving analysis of the student with an idealist personality type (SS) only fulfilled three indicators, namely understanding the problem, devising a plan, and carrying out the plan.
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