17.
Until your birthday in 2010, you are (were) 40. On your birthday in May of 2010, you will (did) turn 41.
17 years before the year the question is asked. Example: Person in 2011: "What year should a person be born to be 17 years old?" ---> 2011 minus 17 equals 1994/// 2011-17=1994 So a person born in 1994 would be 17 years old in 2011. Birthdays near the end of a year however may throw off the formula. For example, if someone is born in December 1993, they would also be 17 years old in 2011. So the easiest way to find out which year would be to simply ask someone when they were born.
Either may be correct depending on context. If you are merely specifying the month then it would be correct to say your birthday is in that month. Being more specific you would say your birthday is on a specific date.
May 17th, 2011 in roman numerals would be: V/XVII/MMXI.
Today, the 23rd of February 2013, a person born in May 1969 would be 43. They will be 44 on their birthday in May 2013.
On your birthday in May of 2010, you turned 16. You'll stay that way until your birthday in 2011.
His birthday is May 20th 1994.
May 21st, 1994
10th may 1994
Pinter's 'The Birthday Party' - 2011 was released on: USA: 15 May 2011
Bob Hope's Birthday Memories - 1994 TV was released on: USA: 14 May 1994
Sister Sister - 1994 The Birthday 1-8 was released on: USA: 20 May 1994
He will be 70 on May 24 2011.
As of right now, 16. After May 27, he would be 17 years old.
Remington Kropp's birthday is on May 5, 1994 it says this on his facebook page
my birthday!!
Three of them, in 1994, 2005 and 2011.