If you are told that a randomly selected mystery person was born in the 1990's, what is the probability of guessing his/her exact birth date (including year)?

A) $2.738 \times 10 ^ { - 3 }$
B) $2.737 \times 10 ^ { - 3 }$
C) $2.740 \times 10 ^ { - 4 }$
D) $2.738 \times 10 ^ { - 4 }$

Question

If you are told that a randomly selected mystery person was born in the 1990's, what is the probability of guessing his/her exact birth date (including year)?

A) $2.738 \times 10 ^ { - 3 }$
B) $2.737 \times 10 ^ { - 3 }$
C) $2.740 \times 10 ^ { - 4 }$
D) $2.738 \times 10 ^ { - 4 }$

Quizplus · Accepted Answer

There are 10 years in the 1990s, and each year has 365 days, except for 1992, 1996, and 2000, which are leap years with 366 days. This totals to 3652 days. The probability of guessing the exact birth date is $ \frac{1}{3652} \approx 2.738 \times 10^{-4} $.

If You Are Told That a Randomly Selected Mystery Person 2.738×10−32.738 \times 10 ^ { - 3 }2.738×10−3

If You Are Told That a Randomly Selected Mystery Person $2.738 \times 10 ^ { - 3 }$