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0 votes
0 answers
33 views

Beating Harvard scientists

4 votes
1 answer
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2014 MIT Aquarium Hunt Puzzle #8

3 votes
1 answer
113 views

Raven's matrix: circles with loops inside or outside

3 votes
1 answer
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2 votes
1 answer
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two-by-two grids with red or blue cells, or no cell at all

2 votes
1 answer
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5 votes
1 answer
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3 votes
2 answers
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Progressive matrix with line diagrams

2 votes
2 answers
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Digerati IQ test

6 votes
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Find the weakest link

7 votes
1 answer
240 views

Find the missing items in this receipt

6 votes
1 answer
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The rate is rising

3 votes
1 answer
184 views

4x4 grids with stars in certain cells, corresponding to numbers

1 vote
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223 views

Can you find the trap?

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