Before the chance machine
by Froga
What Chance machines builds on: a chance worked out by counting, why all the chances add up to 100%, and when to multiply chances and when to add them. About ten minutes.
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Study material
When nobody tells you a chance, you can estimate it by counting: how many times it happened, out of how many times it could have. 3 out of 4 is 75%; 1 out of 5 is 20%.
Over 50 days, 10 were windy. Going by that, what is the chance that a day is windy, as a percentage? Enter just the number.
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