# Chapter 12 - Sequences; Induction; the Binomial Theorem - 12.1 Sequences - 12.1 Assess Your Understanding - Page 807: 62

$\sum_{k=1}^{12} (2k-1)$

#### Work Step by Step

We can see that this is the sum of the first $12$ odd numbers. Hence the summation formula is: $\sum_{k=1}^{12} (2k-1)$

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