Lemma
DeepSequences & series
GSM8K train #3028 · Algebra · Sequences & series

Mary has a mystery book library

Mary has a mystery book library. She started with 72 mystery books at the beginning of the year. She joined a book club that sent her 1 book each month of the year. She went to a bookstore halfway through the year and bought 5 more books, then bought 2 books at yard sales later. Her daughter gave her another book for her birthday, and her mother gave her a series of 4 books when Mary visited her. She donated 12 books she didn't want to read again to a charity shop and sold 3 to a used book store. How many books did she have at the end of the year?

~11 minAnswer checked instantly

GSM8K — Grade School Math 8K (Cobbe et al., OpenAI, 2021) · train #3028

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your answer
Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.

Checked against the answer in GSM8K.