**Solution :** We have given **Four children anne,jordan,david & katie are to be seated in a single row on a bench**. Now to find sitting arrangements we need to put first Anne in the left, so, **there will be two possible ways for Anne to sit**:

**Anne, child, child, child**

**or**

**child, Anne, child, child.**

Then we must have in mind also that in each place we should put one of the 3 children left so there will be **2 times 3! ways of arrange them**.

If the question say's left and means that 'left with respect to all others' then it is just the first case and we will have **1 times 3! ways to arrange them**.

**Anne, child, child, child.**