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Fast Math - Double That Number! in 30 Seconds

In just 30 seconds, can you double all of these numbers?
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Quiz by Stewart
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Last updated: November 27, 2019
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First submittedApril 17, 2018
Times taken13,496
Average score43.8%
Rating4.11
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 Number 
Double
786
1572
172
344
460
920
826
1652
 Number 
Double
137
274
246
492
714
1428
747
1494
 Number 
Double
73
146
601
1202
598
1196
857
1714
 Number 
Double
918
1836
842
1684
95
190
292
584
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