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Continue Learning about Math & Arithmetic

Someone was born in 1999how old is that person?

They would celebrate their eighteenth birthday this year (2017).


Suppose Kalvin tosses a coin to determine his breakfast cereal every day. He starts on his 12th birthday and ends on his 18th birthday. How many times would you expect him to eat Cocoa Blast cereal?

It would be 50% of the time. The question gives a time line of from his 12th birthday to his 18th birthday but that information wasn't needed. The question is basically you have a coin... you flip it. what is the odds that it lands on heads so Kalvin enjoys a bowl of his favorite Cocoa Blast Cereal. This is wrong because it is asking your for a prediction of how many times he would eat the cereal not the chance that the coin has to be heads. Answer is 50 % of the time.


Why is it called your eighteenth birthday when you turn eighteen Wouldn't it be your nineteenth actual birthday because the date appeared the nineteenth time including the day you were born?

That is true but what people mean is it has been eighteen years since your birthday. **************************** The point of birthdays is to observe how old someone is. People are considered to be zero years old when they are born (although if you wanted to, you could date their lives from conception instead, which makes them usually 9 months old when they are born - but that is not the normal convention for calculating age). You have to live another year to be one year old and celebrate your first birthday - even though if you count the day you were born as your first birthday, a year later would actually be your second birthday. But you are still just one year old.


What is a quarter birthday?

A quarter birthday is half a half birthday.A half birthday is in between your birthday and birthday...


What do they call it when your age and birthday are the same?

Its called your Golden Birthday or its called your Champagne Birthday