| Answer | Population | % Correct |
|---|---|---|
| Barcelona | 4,875,000 | 100%
|
| Berlin | 4,750,000 | 100%
|
| Bogotá | 9,800,000 | 100%
|
| Buenos Aires | 16,600,000 | 100%
|
| Boston | 7,700,000 | 99%
|
| Brasília | 4,050,000 | 99%
|
| Bucharest | 2,200,000 | 99%
|
| Budapest | 2,625,000 | 99%
|
| Birmingham | 3,150,000 | 98%
|
| Baku | 2,625,000 | 97%
|
| Bordeaux | 1,100,000 | 97%
|
| Brisbane | 3,225,000 | 97%
|
| Brussels | 2,725,000 | 97%
|
| Baghdad | 7,150,000 | 95%
|
| Beijing | 20,000,000 | 95%
|
| Belgrade | 1,430,000 | 94%
|
| Bangkok | 19,400,000 | 93%
|
| Beirut | 1,790,000 | 92%
|
| Belo Horizonte | 5,050,000 | 90%
|
| Bangalore | 12,700,000 | 89%
|
| Brazzaville | 2,350,000 | 87%
|
| Bamako | 3,675,000 | 86%
|
| Bishkek | 1,120,000 | 85%
|
| Buffalo | 1,350,000 | 80%
|
| Bangui | 1,230,000 | 79%
|
| Barranquilla | 2,150,000 | 79%
|
| Bremen | 1,000,000 | 79%
|
| Belém | 2,250,000 | 77%
|
| Bandung | 7,050,000 | 75%
|
| Banjul | 1,010,000 | 72%
|
| Basra | 1,560,000 | 66%
|
| Bursa | 2,125,000 | 63%
|
| Bhopal | 2,475,000 | 57%
|
| Benin City | 1,700,000 | 53%
|
| Barquisimeto | 1,310,000 | 34%
|
| Benguela | 1,280,000 | 34%
|
| Baotou | 2,250,000 | 32%
|
| Bhilai | 2,975,000 | 32%
|
| Bucaramanga | 1,280,000 | 32%
|
| Batam | 1,450,000 | 23%
|
| Bhubaneswar | 1,940,000 | 23%
|
| Baoding | 2,150,000 | 22%
|
| Bandar Lampung | 1,220,000 | 21%
|
| Baoji | 1,150,000 | 16%
|
| Bareilly | 1,350,000 | 16%
|
| Bengbu | 1,600,00 | 16%
|
| Benxi | 1,110,000 | 14%
|