Dexter was born between October 6th and 10th (6th and 10th excluding). His year of birth is also known. What is the probability of Dexter being born on a Saturday?
Pick one:
A) 0 or 1/3
B) 1/7 or 3/7
C) 1/3 or 1/7
D) 1/3 or 1/4
E) cannot be determined.
Explanation :   Since the year of birth is known, the birthday being on Saturday can have a zero probability.   Also since between 6th and 10th, there are three days i.e. 7th,8th and 9th.   Therefore, probability of birthday falling on Saturday can be 1/3.   0 or 1/3nswer : 0 or 1/3
<result>A</result>
Dexter was born between October 6th and 10th (6th and 10th excluding). His year of birth is also known. What is the probability of Dexter being born on a Saturday?