Q. The number of sleepers used for rail varies from, when n = Length of rail in metres. (Solved)
1. (n + 1) to (n + 4)
2. (n + 3) to (n + 6)
3. (n + 2) to (n + 7)
4. (n + 4) to (n + 8)
- b. (n + 3) to (n + 6)
1. (n + 1) to (n + 4)
2. (n + 3) to (n + 6)
3. (n + 2) to (n + 7)
4. (n + 4) to (n + 8)