# Progressive matrix with blue squares on either side of a line

This is another puzzle that no-one seems to have cracked on Reddit. It is a Raven's Matrix question from an IQ test, I presume. Does anyone here know the solution?

OPTION C

Reason

The puzzle is to be viewed as the matrix generating 6 numerical outputs associated with each of the halves of the leftmost (or right most depending on how you want to look at it) tile. To get the number output for a half, one needs to add up the number of blue squares in all the ‘opposing’ halves starting from and including that half thinking row-wise:

You can see that this then, top down speaking, makes a nice number sequence with an obvious pattern: 6,7,8,9.

To continue the pattern we need something that has 6 squares on top and 3 on the bottom to make 10 and 11…

Option C is the only one that can fulfill this role and so is the answer.

• Nice answer! But I would like to see some alternatives! Commented Feb 18 at 9:14
• If anyone finds a better answer I will be highly surprised. I don’t think this pattern existing in the matrix is purely coincidental…
– PDT
Commented Feb 18 at 13:15