Latest TCS Aptitude Question SOLUTION: Probability that leap year chosen at random will have 53 sundays

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Probability that leap year chosen at random will have 53 sundays

Asked In TCS akshitha (11 years ago)

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Sruthi karuturi  (11 years ago)

A leap year has 366 days, therefore 52 weeks i.e. 52 Sunday and 2 days.
The remaining 2 days may be
Sunday and Monday
Monday and Tuesday
Tuesday and Wednesday
Wednesday and Thursday
Thursday and Friday
Friday and Saturday
Saturday and Sunday
For having 53 Sundays in a year, one of the remaining 2 days must be a Sunday.
2 / 7

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kalyan  (11 years ago)

2/21

sat sun or sun mon

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Diwakar Kumar  (11 years ago)

as each leap year comes in 4 years.
So probability of selecting a leap year is 1/4
also probability of sunday in a leap year is 2/7

similarly prob..of normal year in 4 y is 3/4

prob. of sunday in normal year is 1/7

hence total probability =1/4*2/7+3/4*1/7=5/28

Ans 5/28

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sanju  (11 years ago)

can anybody xpln it clearly

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