Question

Find the probability that Sunday is the last day of a non leap year , which started with a Sunday.

Answer 1

Given the First day = Sunday.

A Non leap year has 365 days.

365 days have 52 weeks + 1 day. So, the first day will be the same as last day.

So, The last day of the year is Sunday

It is a certain event,

Probability = 1/1 = 1 .

Hope helped!

Answer 2

We know that sunday is first day of week,

And a non leap year has 52 weeks and 1 day,

If the first day is sunday it means that the year is started from the first day of week..so the first day of every week is sunday...

The left one day will be the starting day of 53rd week... So it will also be sunday.

So it is confirmed that the last day is sunday..

Hence it is sure event...

So, it's probability is 1......