If 17th June 1984 is coded as 14th January 89 and 23rd November 1977 is coded as 12th November 79
Then the code used for Independence Day is
OPtion
1). 1 April 79
2). 11th April 89
3). 11th January 89
4). 14th june 79
5). 10th April 69
6). 1 April 89
7). 14th January 89
8). 11th April 79
9). 10th june 59
10). 10th April 49
Solution
17th June 1984 - 17-06-1984
- 01-14-67-89 In increasing order
Code is - 14th January 89
Similarly
23rd November 1977 - 23-11-1977
- 11-12-37-79
Code is - 12th November 79
Similarly
15th August 1947 - 15-08-1947
- 01-14-57-89 In increasing order
Code is - 14th January 89