A month of 30 days has four complete weeks and 2 extra days. These two days may be;
(i) Monday and Tuesday
(ii) Tuesday and Wednesday
(iii) Wednesday and Thursday
(iv) Thursday and Friday
(v) Friday and Saturday
(vi) Saturday and Sunday
(vii) Sunday and Monday.
∴ The number of all possible events = 7
Now in these events, last two events have Sunday each.
∴ Number of favourable outcomes = 2
∴ In these remaining two days, the probability of having Sunday = \(\frac { 2 }{ 7 }\).
