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Just For Fun Quiz / Super Diabolical Extreme Hard Mental Mathematics!!!!!!!!

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Can you name the Answers to the Diabolical Mental Mathematic Problems; They're for people who really knows the tricks?

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 15:00
Math ProblemAnswer
2075 SQUARED
309X301
104X101
-98X97
-52 SQUARED
2035 SQUARED
302X306
97X98
114X118
7035 SQUARED
-94X97
102X206
205X209
206X207
-54+57-102X108
104X102
9015 SQUARED
507X504
94X98
105X107
103X104
-45 SQUARED
301X305
94X92
96 SQUARED
Math ProblemAnswer
115X111
-102X(-104)
54+12X2-101(-102)
105+(94x99)
205X204
-96X-93
6025 SQUARED
301X(-302)
201X207
94X97
901X704
-205X607
4015 SQUARED
91X98
112X114
54 SQUARED
-53X53
112X117
(54/9X8) SQUARED
103X107
304X308
204X208
507X502-27/3
75 SQUARED
106X104
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