99
Question:
Bob's favorite number is between $50$ and $100$.  It is a multiple of $11$, but not a multiple of $2$.  The sum of its digits is a multiple of $3$.  What is Bob's favorite number?
Answer:
Let's think step by step.

user
99
Bob's favorite number is between $50$ and $100$.  It is a multiple of $11$, but not a multiple of $2$.  The sum of its digits is a multiple of $3$.  What is Bob's favorite number?
train