CGPET 2011 Solved Paper

First wedding can be occured in a week in 7 ways. Similarly, second, third , ..., seventh wedding can also be occured in 7 ways.
∴ Total number of cases of occuring the weddings =77
Number of cases that these weddings occur on the same day =7
∴ Required probability =‌

7

77

=‌

1

76