2160 240 6480 20 16 24 32 48 2700 450 100 4500 9 3 6 12 10,368 24 1152 384 48 24 36 12 81 18 54 45 45 30 60 15 45 81 18 54 6 3 0 9 42 72 24 27 17 51 25 45 A Bit Too Difficult You definitely have a head for math as you solved a significant number of the problems.
12 Qs
While being a PC wizard will undoubtedly make your life a lot easier, even just having a bit of knowledge of the absolute basics will make a significant difference.
15 Qs
Share Result Not Bad, But Not Great You definitely have a head for math as you solved a significant number of the problems. Unfortunately, it was still less than half of them and so you should refresh your math skills a bit.
15 Qs
You have identified a significant part of the photos, and it definitely bodes well for your 20th century knowledge. However, you still have room to learn more about the fascinating history of the 20th century and the iconic photos taken during that period. Share Result Amazing!
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