Finding total number of students needs in a class to ensure that the probability of at least two of them having the birth date on the same month during current year is more than 30% assuming no student has birthday on the 29th or 30th of any month? (You may need to consider leap year. Please write down your approach to the answer in detail.)

Respuesta :

The chance is 365/365 = 1, since the first individual could be born on any day of the year. A 1/365 possibility exists for the second individual to be born on the same day as the first.

What is the Birthday Paradox?

  • The exact number of years before my father's birth—on August 2—was me. Being born on the same day as my father was something extremely special, I always instilled.
  • Even two buddies who shared the same birthday don't exist for me.
  • Having two persons with the same birthday doesn't really occur to me as a mathematical problem.
  • I likely would not have known about the birthday paradox if a friend of mine hadn't brought it up one day. You're at an event, he said. What are the chances that two people in the room, who all have the same birthdate, will be there? There are precisely 23 people there. I reacted by saying, "I don't know, but I think they are quite low."

It is actually greater than 50%.

Say nothing! Absolutely not true!

Indeed, it is, as it happens.

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