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

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probability that a leap year is chosen at random will have 53 sundays

Asked In TCS karthika (10 years ago)

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Amrutha Duggirala  (10 years ago)

A Leap Year has 366 Days which includes 52 complete weeks and 2 odd days..
As we need the probability of having 53 Sundays, the two odd days may be either Sunday & Monday (or) Saturday & Sunday.. so selecting 2 out of 7 => 2/7

Is this solution Helpfull? Yes (34) | No (1)  

Kundan Kumar  (10 years ago)

In a leap year 2 days are extra in a week( 52 Weeks + 2 Days)
Now this two days can be
(Sunday,Monday)(Monday,Tuesday)(Tuesday,Wednesday)(Wednesday,Thursday)(Thursday,Friday)(Friday,Saturday)(Saturday,Sunday)
Hence
Total No. of Possible outcomes=7
and Chance of occurance of Sunday =2
Hence probability= 2/7 Ans.

Is this solution Helpfull? Yes (10) | No   

AMAR NATH  (10 years ago)

A Leap Year has 366 Days which includes 52 complete weeks and 2 odd days,,,,
the 2 days may be as..
(Sunday,Monday)(Monday,Tuesday)(Tuesday,Wednesday)(Wednesday,Thursday)(Thursday,Friday); (Friday,Saturday); (Saturday,Sunday)
for being sunday..the two odd days may be either Sunday & Monday (or) Saturday & Sunday.. so selecting 2 out of 7 => 2/7

Is this solution Helpfull? Yes (3) | No   

Parveen Soni  (10 years ago)

In leap year we have 52 weeks and 2 more days
So 2 more days can be
(Sun,Mon),(Mon,Tue),(Tue,Wed),(Wed,Thur),(Thur,Fri),(Fri,Sat),(Sat,Sun).
To have 53 Sunday (52 weeks have 52 Sundays),we have 2 cases are there in which Sunday is there.
prob=2/7.

Is this solution Helpfull? Yes (2) | No (1)  

Arindam Dhara  (10 years ago)

2/7.. 364+2 days so 2 days out of 7 days....its 2/7

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Rohit Bohra  (10 years ago)

2/7 is right answer

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anshu  (10 years ago)

in leap year days=366
ans=2/7

Is this solution Helpfull? Yes | No (1)  

dinesh  (10 years ago)

answer=2/7

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Guru Pranav  (10 years ago)

1/7+1/7 Ans.

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