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How many people have a birthday on the same day?
The answer is 9 000 000 people
How many people have the same birthday in the US?
EVERYBODY in the US has the same birthday as someone else in the US. The converse would be that someone in the US has his/her own birthday and nobody else in the entire population of 300,000,000 people in the US was born on that day.
How many people are needed in a room before two of them share the same birthday?
For the chance to be at least 50% that two people share the same birthday, there needs to be 22 people. For the chance to be exactly 100% that two people share the same birthday, there needs to be 366 people. If there was 365 people, there would be a very small chance that each person in the room would have different birthdays. With 366 people, there are not enough individual days for every person to have a different birthday, so there has to be at least one pair.
How many people have the same birthday in the world?
It must be about 360,000 - the approximate number of world births per dayit is estematet to be that 150 million or billion(i cant remember) people share your birthday
Same age as birth year?
Many people think that it is special to celebrate a birthday where your age is the same year as your birth year. This usually happens to people during their earlier years.
