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20 questions
−7−3-7-3−7−3
444
−4-4−4
−10-10−10
101010
−3−(−2)-3-\left(-2\right)−3−(−2)
111
−1-1−1
555
−5-5−5
−3-3−3
333
111111
−11-11−11
−2-2−2
−12-12−12
222
666
−6-6−6
888
−8-8−8
000
161616
−16-16−16
7−6−47-6-47−6−4
999
−17-17−17
777
151515
−13-13−13
−7-7−7
−9-9−9
−14-14−14
181818
191919
−18-18−18
242424
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