Cody

# Problem 1267. Calculate the probability that at least two people in a group share the same birthday.

Solution 1990557

Submitted on 25 Oct 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
n = 1; y_correct = 0.00; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.

2   Fail
n = 366; y_correct = 1.00; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

Error using factorial (line 20) N must be an array of real non-negative integers. Error in birthday_prob (line 2) y = factorial(365)/((365^n)*factorial(365-n)) Error in Test2 (line 3) assert(abs(birthday_prob(n)-y_correct) <= 0.015)

3   Fail
n = 0; y_correct = 0.00; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.

4   Fail
n = 23; y_correct = 0.5073; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.

5   Fail
n = 50; y_correct = 0.9704; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.

6   Fail
n = 100; y_correct = 1.0000; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.

7   Fail
n = 10 y_correct = 0.1169; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

n = 10 y = NaN

Assertion failed.

8   Fail
n = 13 y_correct = 0.1944; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

n = 13 y = NaN

Assertion failed.

9   Fail
n = 2; y_correct = 1/365; assert(abs(birthday_prob(n)-y_correct) <= 0.015)

y = NaN

Assertion failed.