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Q. |
The number of sleepers used for rail varies from, when n = Length of rail in metres. |
A. | (n + 1) to (n + 4) |
B. | (n + 3) to (n + 6) |
C. | (n + 2) to (n + 7) |
D. | (n + 4) to (n + 8) |
Answer» B. (n + 3) to (n + 6) |
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