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iq test #2
22.
What number should replace the question mark?
10
12
9
8
7
Explanation:
The number in the third row = (the number in the first row is multiplied by the number of the second row) minus 2 to the power of the column number. (28 = 5 × 6 - 2; 52 = 7 × 8 - 4; 34 = 6 × 7 - 8; 65 = 9 × 9 - 16).
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