Ethan is thinking of a negative number. This number is lower than $-4$ and higher than $-10$. The number is odd and a multiple of $3$. We need to find this number.

1. Problem Description

Ethan is thinking of a negative number. This number is lower than $-4$ and higher than $-10$. The number is odd and a multiple of $3$. We need to find this number.

2. Solution Steps

The number is between $-10$ and $-4$. That means it is one of the following numbers:

$-9, -8, -7, -6, -5$.

The number must be odd, so we can eliminate the even numbers:

$-9, -7, -5$.

The number must be a multiple of $3$, so it must be divisible by $3$.

Out of the remaining numbers, only $-9$ is a multiple of $3$ since $-9 = 3 \times -3$.

Therefore, the number Ethan is thinking of is $-9$.

3. Final Answer

-9