In the Mensa IQ Check app, the same kind of puzzles keeps coming back. I don't know how to solve it. Can anyone help me?
5 Answers
Answer
X
Because
The pattern needs the X to repeat
There is a pattern of 5 possible symbols: X # O @ !.
The pattern repeats in a spiral pattern around the square (Starting at the left top corner).
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$\begingroup$ What does "the pattern needs the X to repeat" mean? What does the picture show? Please explain more. $\endgroup$– bobbleOct 22, 2020 at 17:46
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$\begingroup$ @Tim, that's pretty quick. It took me a bit longer than that. lol. $\endgroup$ Oct 26, 2020 at 15:04
O
Because
When you draw the bottom-left top-right extended diagonals, there are duplicate symbols sitting next to each other on every line
(I think MacGyver88's solution is simpler, so it is probably what the author thought about).
From the six columns only the fourth contains the same symbol 3 times, namely the symbol $O$. In addition to that, none of the rows contains the same symbol 3 times. If we replace the question mark which is on fourth row with the symbol $X$ then on the fourth row the symbol $X$ appears 3 times as well.
Or....
Each row has exactly one symbol duplicated. In the ? row the X is already duplicated, meaning the answer must be #, to have all 5 symbols.
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3$\begingroup$ This fails in the third row, where both O and @ are duplicated, or the 5th with ! and # $\endgroup$– TCooperOct 23, 2020 at 18:55
Answer
It could be @
Because
The outer two columns have patterns that are copies of each other, with symbols changed. The same is true for the inner 2 columns. If we use @ instead of ? this pattern would be true for column 2 and 5 as well.
But
I think the solution from @MacGyver88 is nicer than this solution, although any of them could be valid.
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$\begingroup$ Copies with symbols changed? That makes them non-copies. $\endgroup$– TimOct 24, 2020 at 8:33
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$\begingroup$ @Tim you're right. I've edited the answer. $\endgroup$ Oct 24, 2020 at 8:46