People's birthdays are taken one at a time at random. How many times can you do this before you find two people with the same birthday?
Months
January
February
March
April
May
June
July
August
September
October
November
December
Generate Birthdays
Birthdays: 0 - Matches: 0
Minimum number of people
The minimum number of people for there to be a specific probability of two or more coincident birthdays
Probability:
-
Probability
The probability of two or more people sharing a birthday
Number of people:
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This question appears in the following syllabi:
| Syllabus | Module | Section | Topic | Exam Year |
|---|---|---|---|---|
| AQA A-Level (UK - Pre-2017) | S1 | Probability | Experimental | - |
| AQA AS Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| AQA AS/A2 Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| CBSE XII (India) | Probability | Probability | Repeated independent (Bernoulli) trials and binomial distribution | - |
| CBSE XI (India) | Statistics and Probability | Probability | Random experiments, outcomes, sample spaces (set representation) | - |
| CCEA A-Level (NI) | S1 | Probability | Experimental | - |
| CIE A-Level (UK) | S1 | Probability | Experimental | - |
| Edexcel A-Level (UK - Pre-2017) | S1 | Probability | Experimental | - |
| Edexcel AS Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| Edexcel AS/A2 Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| I.B. Higher Level | 5 | Probability | Experimental | - |
| I.B. Standard Level | 5 | Probability | Experimental | - |
| Methods (UK) | M15 | Probability | Experimental | - |
| I.B. (MSSL) | 3 | Probability | Experimental | - |
| OCR A-Level (UK - Pre-2017) | S1 | Probability | Experimental | - |
| OCR AS Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| OCR MEI AS Maths 2017 | Statistics | Probability | Experimental Probabilities | - |
| OCR-MEI A-Level (UK - Pre-2017) | S1 | Probability | Experimental | - |
| Pre-Calculus (US) | E4 | Probability | Experimental | - |
| Pre-U A-Level (UK) | Prob | Probability | Experimental | - |
| Scottish (Highers + Advanced) | HS | Probability | Experimental | - |
| Scottish Highers | S | Probability | Experimental | - |
| Universal (all site questions) | P | Probability | Experimental | - |
| WJEC A-Level (Wales) | S1 | Probability | Experimental | - |