What is the probability that two people have the same birthday?

The first person could have any birthday (p = 365÷365 = 1), and the second person could then have any of the other 364 birthdays (p = 364÷365). Multiply those two and you have about 0.9973 as the probability that any two people have different birthdays, or 1−0.9973 = 0.0027 as the probability that they have the same birthday.

What is the probability of Boris and Charlie having the same birthday?

What is the probability of Boris having a birthday on the same day = (1/365) * (1/365) Similarly, probability of Charlie having a birthday on the same day = (1/365)^3 The above answer is for a specific day in a year. Since we are fine with any day in the year, multiply the answer with 365 (total number of days in the year).

Do two people share a birthday?

In a bar with even a small crowd, if you can get someone to take your bet that two people share a birthday, you’ll win more often than you lose. In a randomly selected group of 50 people or more, it is nearly certain that two or more will share a birthday (p ≥ 97\%).

What is the meaning of various probability?

/ Various probability Calculates a table of the probability that one or more pairs in a group have the same birthday and draws the chart. n persons in a group (1) the probability that all birthdays of n persons are different.

What is the probability of each student being born on 365 days?

Let’s take this step by step: The first student can be born on any day, so we’ll give him a probability of 365/365. The next student is now limited to 364 possible days, so the second student’s probability is 364/365. The third student may be born on any of the remaining 363 days, so 363/365.

What is the probability that a student’s score is more than 2100?

S ∼ N(1500, 300) We want the probability that a student’s score is greater than or equal to 2100 given that we know the student’s score is greater than or equal to 1900. In symbols, we want: So, if we randomly selecte a recognized student, there is about a 24.94\% chance that they scored more than 2100.

What are the chances of siblings matching their birthdays?

If we ignore leap years, the answer is really simple. The first sibling is born. Now when the 2nd sibling is born, they have a 1/365 chance of matching that birthday. , muslim, believer, rational thinker.

How many people share a birthday with each other?

If there are 366 or more people, but only 365 possible birthdays disregarding leap year, then two or more of them mustshare a birthday. Here are some sample results:

What is the probability of being born on February 29th?

Leap years only happen every fourth year (more or less), so the probability that a person was born on February 29 is 1/1461 and the probability of every other day would be 4/1461.