Exam · Read the Chart
Revenue and costs, births and deaths: what you get by subtracting
10 questions
Using the game mechanic. No time limit.
Explanation after each answer
You’ll see why it’s correct, with the calculation.
Final score
How many you got right out of 10.
Choose your level
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🏆 New: play it live with your class, everyone on their phone →Chart exam with two related series: revenue and costs, births and deaths, exports and imports. Subtract the two bars to say which year made a loss.
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