What is the approximate probability (in percentage) that at least $2$ people in a group of $6$ randomly-selected have a birthday on the same day of the week?
closed as off-topic by Jean-Claude Arbaut, AlexR, Najib Idrissi, Surb, N. F. Taussig Apr 15 '15 at 9:49
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Jean-Claude Arbaut, AlexR, Najib Idrissi, Surb, N. F. Taussig