Hröð stærðfræði - tvöfalda þá tölu!

Getur þú tvöfaldað allar þessar tölur innan tímamarka? Prófaðu andlega stærðfræðikunnáttu þína!
Þessi spurningakeppni breytist í hvert skipti sem þú spilar!
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This quiz is in Icelandic
Quiz by Jerry928
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Last updated: September 17, 2023
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First submittedSeptember 17, 2023
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númer
tvöfalt
533
1066
942
1884
837
1674
150
300
611
1222
349
698
70
140
393
786
84
168
952
1904
432
864
807
1614
309
618
279
558
422
844
308
616
10
20
868
1736
520
1040
235
470
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