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Joined:	25 Jan 2007
Post:	64

28 Jan 2007 20:18:02 IST

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884

most probable question

Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Algebra

what is the probability that there will be 53 sundays in a randomly selected

a>leap year

b>non leap year.

ans a>2/7

b>1/7

Comments (1)

aakash_128

New kid on the Block

Joined: 27 Jan 2007

Posts: 6

28 Jan 2007 20:33:34 IST

Like 1 people liked this

Hi kuldeep

here is your answer.......------

There are 52 weeks in a year...

so there are 364 days...
Now for a leap year there are 366 days...

there are 2 days left...

which can be of the following types:

saturday-suday

sunday-monday

monday-tuesday

tuesday-wednesday

wednesday-thursday

thursdau-friday

friday-saturday

So there are 7 total choices

of which a sunday can be arrived an 2 ways(first two choices)

Sp probability=2/7 for a leap year and

1/7 for a nonleap year....

thank you..

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