If equal numbers of people are born on each day, find the approximate percentage of the people whose birthday will fall on 29thFebruary.(if we are to consider people born in 20thcentury and assuming no deaths).
Choices.
A) 0.374  B) 0.5732  C) 0.0684  D) None of these  E) Cannot be determined
Explanation :   Let the number of people born on each day = n.   Total years in the 20th century = 100.   Total number of leap years (years in which 29th February appear) = 25.   Sample Space (days) = 365*75 + 366*25= 
<gadget id="calculator">365*75 + 366*25</gadget>
<output>36_525</output>
36525 days.   So, Sample Space (population)= 36525*n   Favourable Set (population) = 25*n   Hence, the required probability = 25 * n /36525*n = 0.000684.   = 0.0684%.   Answer : 0.0684
<result>C</result>
If equal numbers of people are born on each day, find the approximate percentage of the people whose birthday will fall on 29thFebruary.(if we are to consider people born in 20thcentury and assuming no deaths).