1. 20 years
2. 30 years
3. 45 years
4. None of these
None of these
1. 7
2. 8
3. 9
4. 10
5. 11
10
1. 14 years
2. 18 years
3. 20 years
4. 22 years
22 years
1. 1 : 2
2. 1 : 5
3. 3 : 8
4. None of these
None of these
1. 5 : 2
2. 7 : 3
3. 9 :2
4. 13 : 4
7 : 3
1. 32 years
2. 36 years
3. 44 years
4. Data inadequate
5. None of these
None of these
1. 9 : 2
2. 11 : 3
3. 12 : 5
4. 13 : 4
13 : 4
1. 40 years
2. 45 years
3. 50 years
4. 55 years
45 years
1. 6 and 39
2. 7 and 38
3. 9 and 36
4. 11 and 34
6 and 39
1. 32 years
2. 36 years
3. 38 years
4. 40 years
38 years