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Numerical Ability
Probability
find the probability that year choosen at random has 53 mondays
Read Solution (Total 4)
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- Probability that year chosen is a leap yea=1/4
Probability that odd day in leap year is monday=2/7
Probability that year chosen is not a leap year=3/4
Probability that odd day is a monday=1/7
So, probability that a year has 53 mondays= (1/4*2/7)+(3/4*1/7)=5/28 - 11 years agoHelpfull: Yes(34) No(1)
- 52 weeks,so 52 Mondays.
the remaining one has the probability of 1/7 - 11 years agoHelpfull: Yes(20) No(4)
- first of all when we select year we have probability of= 1/2 leap yr and 1/2 year
therefore
in leap year probability=2/7
in normal year 1/7
total probability=1/2(2/7)+1/2(1/7) = 3/14 Ans
- 11 years agoHelpfull: Yes(9) No(7)
- 2/7 is ans
- 11 years agoHelpfull: Yes(3) No(19)
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