Which of the following expression represent the relative compaction of soil, where variables have their standard meanings?
1
\(R = \frac{{{\gamma _{d\left( {field} \right)}}}}{{{\gamma _{d\left( {max - lab} \right)}}}} \times 100\)
2
\(R = \frac{{{\gamma _{d\left( {max - lab} \right)}}}}{{{\gamma _d}\left( {field} \right)}} \times 100\)
3
\(R = \frac{{1 - {\gamma _{d\left( {field} \right)}}}}{{{\gamma _{d\left( {max - lab} \right)}}}}\)
4
None of these