planetqhe and the IB Random Behaviour Experimental vs Theoretical Compound Events I Compound Events II Expectations and Distributions Distributions and Hypotheses Probability in the real world Home Contact Essential Questions Chevalier de Mere 2 Dice World Cup Finals Birthday problem 2 Monty Hall Random Quadratics

and many others in

"Chance Rules"

available below at amazon.co.uk

QHE Question:

This question concerns one of the best-known probability puzzles- 'The Birthday Problem'.

How many people should there be in a room so that the probability of at least one of them having the same birthday is fifty-fifty?

Choose an interval in which you consider the answer will lie:

 0-15 16-30 31-45 46-60 61-75 76-90 91-105 106-120 121-135 136-150 151-165 166-180 181-195 196-210 211-225 226-240 241-255 256-270 271-285 286-300 301-315 316-330 331-345 346-360 361-365

and many others in

"Chance Rules"

available below at amazon.com

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