# Random IQ Matrix question

Found this picture in a random Whatsapp group. Someone said it's from one of the free online Mensa tests. Exact source unknown.

• With the tiny amount of information in this grid, and no completely obvious pattern, it feels to me like a minimal description of the finished grid would just be its literal enumeration rather than a description by pattern, regardless of the final tile. Sep 22, 2019 at 10:10

Here's my take:

c. The image is a 3d cylinder which is rotated about the x-axis (left-right). I get this from the point in the middle of the white circle which seems to indicate the tip of the tapered point. The pattern is "do nothing, front up $$90^\circ$$, rotate $$180^\circ$$, tip down $$90^\circ$$" and repeat, and read from left to right, top to bottom. This makes the next object c.

• It's clearly C. My attempt to express it, in case OP is hesitating. If you run from left to right and from top to bottom the whole matrix, the pattern is rotate the object towards z (the imaginary horizon on your screen) 0°,90°,180°,-90°,0°,90°,180°... Feb 22, 2020 at 12:15
• @user65573; or $0^\circ,90^\circ,180^\circ,270^\circ,360^\circ,450^\circ,\dots$.
– JMP
Feb 22, 2020 at 12:28
• Right! good one! Just in front of my eyes! Then this is the definitive synthesized pattern. Feb 22, 2020 at 12:39

Option b.)

On the grounds of:

Exactly 1 change of symbol in each row moving from left to right