The probability of a month of June having 5 Thursdays is 2/7. Explain how?
In a month of June, there are 30 days
We have,
30 days = 28 days + 2 days
30 days = (4 × 7) days + 2 days
30 days = 4 weeks + 2 days
Thus June will always have 4 Thursday. The remaining 2 days can be
(i) Sunday, Monday
(ii) Monday, Tuesday
(iii) Tuesday, Wednesday
(iv) Wednesday, Thursday
(v) Thursday, Friday
(vi) Friday, Saturday
(viii) Saturday, Sunday
∴ Total number of possible outcomes = 7
The number of favourable outcome = 2