How many people must there be in a room before the probability that someone has the same

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How many people must there be in a room before the probability that someone has the same birthday as you do is at least 1/2? How many people must there be before the probability that at least two people have a birthday on July 4 is greater than 1/2?

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Sachin Singh

Dear Students, I am Sachin, an M.Tech from IIT Delhi with several years of industrial experience in the software field. I am here to solve your problems, clear your doubts on that topic you find laborious, in the simplest of ways possible. I will make you understand the toughest of concepts with the easiest of approaches. You are going to find them very simple once we learn together. I have spent years, have put in hundreds of hours in mastering my subjects. So, let me save you a lot of time understanding these subjects and solving the problems in an effortless fashion. I hold a deep understanding of programming concepts, data structures, algorithms, digital electronics, discrete mathematics, etc. I have varied experience in education and tutoring right from my schooling days. From the very start, I have been involved in teaching my fellow batch mates, juniors and kids around my neighborhood to help them with their assignments, complex problems and understanding any topic. People find my ways fun, engaging and interesting. Teaching Style I follow : Strong focus on the "why" in addition to the "what" while solving a problem or explaining a topic. Root cause analysis for any problem/topic. Easy examples to solve complex problems. Strong commitment to clearing student's doubts until he/she completely understands it. Friendly and compassionate teaching so that a student can express better. I teach because I love sharing knowledge more than anything else in the world. In the end, Quoting this stirring quote(one of my favorites) by Swami Vivekananda that I follow : Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea. Let the brain, muscles, nerves, every part of your body, be full of that idea, and just leave every other idea alone. This is the way to success.

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