Question

Find the probability that the month of February may have 5 wednesdays in
(i) a leap year,
(ii) a non leap year.

Class 10, Probability

Answer 1

heya !!!

here's your answer:

◆no. of days in February= 28 (non leap year) or 29(leap year).
◆also, four complete weeks in February.
◆so ,either no extra day in February in non leap year or an extra day in leap year.
◆if the month starts with monday ,Tuesday,or wednesday ,there are 5 wednesdays.

◆so ,

(i) probability of 5 wednesdays in leap year =
1/7 ( bcz there was 1 extra day in leap ).

(ii) probability of 5 wednesdays in non leap year = 0/7 =0 (bcz there was no or 0 extra day in non leap ).


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hope helped !!!☺☺

Answer 2

Hi Moderator,

Here is your answer,

1.A leap year

(1) Leap year then the february month will have 29 days.
So, No of total complete week= 4 Wednesday 

So, there will be 1 day left so it can be any of the days in the week.
P( 5 wednesday in a leap year) = 1/7

(2) In a non leap year feburary has 28 days so which indicated that 4 complete weeks.

So, there can be only 4 wednesday in non leap year.

So, Therefore,
P(5 WEDNESDAY IN NON- LEAP YEAR )= 0


HOPE IT HELPS YOU!