The probability of a month of January having 5 Sundays is 3/7. Explain how?
Answers
Answered by
11
Jan has 31 days.
Every week has 7 days, so 4 weeks have 28days.
Now no of days left is 3.
This 3 days including one sunday can be
Either, 1)fri, sat, sun
2)sat, sun, mon,
3)sun, mon, tues
Thus there are 3 favourable cases.
P(E) =total no of favourable outcomes /total no of outcomes
P=3/7.
Every week has 7 days, so 4 weeks have 28days.
Now no of days left is 3.
This 3 days including one sunday can be
Either, 1)fri, sat, sun
2)sat, sun, mon,
3)sun, mon, tues
Thus there are 3 favourable cases.
P(E) =total no of favourable outcomes /total no of outcomes
P=3/7.
Answered by
3
proof is in pic below please see and understand
Attachments:
Similar questions