How many people understand the math problem of self-rescue when stuck?
Loss 10% and rise 11% to recover
Loss 20% and rise 25% to recover
Loss 30% and rise 42.86% to recover
Loss 40% and rise 66.67% to recover
Loss 50% and rise 100% to recover
Loss 60% and rise 150% to recover
Loss 70% and rise 233.33% to recover
Loss 80% and rise 400% to recover
Loss 90% and rise __% to recover?
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