CAT Exam Numerical Ability

assume that an equal number of people are born on each day. find approximately the percentage of people whose birthday will fall on 29th feb.
the ans is 0.374. I need the procedure.

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Since people born on 29th feb will celeb their birtday only once in 4 year therefore total no of days=(365*4)+1=1461. therefore the percentage is 1(29th feb)/1461*100=0.0684
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sry the ans is 0.0684
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suppose child born in oneday is =x
in the three year total child is =365*x*3=1095x
in the leap year child born is =366x
total child born in four year =1095x+366x=1461x
percentage of child who born in the 29 feb =favourable /sample
100x/1461x=.06844
9 years agoHelpfull: Yes(0) No(1)

CAT Other Question

N= 202 x 20002 x 200000002 x 20000000000000002 x 200000000....2 (31 zeroes) The sum of digits in this multiplication will be:
20% of the students in a class failed in an examination. Out of the students who failed, 75% were males. Male students who failed constitute 90% of the economically poor students in the class. What is the ratio of the number of economically poor students to the number of students in the class?