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Algebra

Cool goIITian

 Joined: 25 Jan 2007 Post: 64
28 Jan 2007 20:18:02 IST
0 People liked this
1
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)

New kid on the Block

Joined: 27 Jan 2007
Posts: 6
28 Jan 2007 20:33:34 IST
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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