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OOO7

Two similar but independent patterns has gotten one out of nine parts misplaced with the other pattern. What two figures (one in range a-i and the other in range 1-9) are the odd ones that should be switched to restore both patterns, and why?

Created by myself

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  • $\begingroup$ With the odd-one-out tag and some other tag not in the top 50 most used tags, you could have entered this in the Fortnightly Topic Challenge #37 :) $\endgroup$ – Feeds Jul 16 '18 at 0:55
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Is it

e and 9?

Rationale:

I notice that taking each shape separately, they are reflected diagonally topleft-bottomright. So that suggests that the two squares that we need to swap are along the diagonal. Then I looked at the bottom diamond. I notice that swapping e and 9 results in this shape alternating + and x on both grids.

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  • 1
    $\begingroup$ Great! You got it! :) $\endgroup$ – Plarsen Mar 3 '18 at 6:17

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