Putting patterns together

Hello, and welcome to Myriora Non-verbal Reasoning! Imagine two patterns on see-through sheets. You lay one on top of the other. What do you see?

Here's the rule. Black shows through. So a square is black if it's black on either sheet. Take the black squares from the first sheet. Then add the black squares from the second sheet. Now you have the answer.

Sometimes both sheets are black in the same place. That square is simply black, once. So don't count it twice.

Some questions flip a sheet first. Flip it, and only then lay it on top. Do the steps in the order the question gives them.

Let's try one together. Which picture shows the two sheets together? Here's a tip: check the sheets one at a time. Say it out loud!

The answer is picture B! It has every black square from both sheets, and no others.

Here's a common mistake. Checking only that the black squares from one sheet are there. A wrong answer can have all of those, and miss some from the other sheet. So check both sheets.

Your turn! Which picture shows the two sheets together? Pick the right card. You've got ten seconds, or pause the video. Go!

Time's up! The answer is picture C! It has every black square from both sheets.

Quick review. Black shows through. Take the black squares from each sheet. A square that's black on both is black once. If a sheet is flipped, flip it first. See you next time!