Determine the probability that among a set of 5 people, at least two have their birthdays in the same month of the year (assuming the months are equally likely for birthdays).

• 0.58
• 0.62
• 0.65
• 0.68
• 0.72

References

Doyle, Peter G. (2006). "Grinstead and Snell's Introduction to Probability" (PDF). Retrieved June 6, 2024.