I am looking for how to complete the following question so that it gives a unique solution. Maybe somebody can give a visual solution.
A lab contains experimental equipment. 24 items are ready to use and do not require additional settings. To start other items, you need to add water, turn electricity, rotate a handle, click a button, or remove an equipment bag.
At least one of equipment bag and buttons are available for 37 items.
There are 26 items that use at least one of water and electricity.
Handles are provided with 23 items.
Two items have 4 characteristics out of five (water or electricity, or a handle or a button, or an equipment bag).
How many items are there in the lab?