Rebecca Rapoport and Dean Chung

Unfortunately, there was a typo in this one. Here's the correct problem:

Unfortunately, there was a typo in this one. Here's the correct problem:

Unfortunately, there was a small error in the image. Here's the correct image:

Unfortunately, there was a typo in this one. Here's the correct problem:

This one is actually correct but the formatting is confusing. Try to guess what we meant before you look at the correct format if you want.

This was mistranscribed to the calendar. Oops! The problem was supposed to read:

**76543211234567 mod 55**

Unfortunately, there was a typo in this one. It should have asked for the number of **positive** roots.

This was mistranscribed to the calendar **and** wrong. Oops! The problem was supposed to read:

but that's 14, not 28. Sorry!

but that's 14, not 28. Sorry!

This one is actually correct but the formatting is confusing. Try to guess what we meant before you look at the correct format if you want.)

Unfortunately, there was a typo in this one. It should have asked for the sum of the 1001st to 1006th digits.

Oops. That's 108. Sorry!

This was mistranscribed to the calendar. The problem was supposed to read:

There was a typo in this problem. The radius was supposed to be 16. Our apologies!

This was mistranscribed to the calendar. The problem was supposed to read:

Unfortunately, there was a typo in this one. The second number in the list should be 336, not 335.

This was mistranscribed to the calendar. The problem was supposed to read:

This was mistranscribed to the calendar. The problem was supposed to read:

Unfortunately, there was a typo in this one. The house was worth $308,000 in 1980.

This one had a typo. The interval is supposed to be [0,50] not [0,100].

The diagram was missing some important info. Here's the correct diagram:

The diagram had an extraneous 7 above the top vertex that should be ignored.