If the proportion of soil passing 75 micron sieve is 50% and the liquid limit and plastic limit are 40% and 20% respectively, then the group index of the soil is

Consider the following statements : For the N-girder shown in the given figure, ILD for force in the member, L_{0}U_{1} is obtained by 1. multiplying the ordinate of ILD for shear in the panel L_{0}L_{1}, by sec θ. 2. dividing the ordinate of ILD for moment at L_{1} by cos θ x L_{0}L_{1} 3. dividing the ordinate of ILD for moment at L_{1} by L_{1}U_{1} Of these statements :

Consider the following statements : 1. In a fluid under motion, the pressure at a point is always perpendicular to the surface. 2. Pascal's law states that the pressure at a point is same in all directions. 3. Magnitude of pressure of a fluid at a point is obtained from hydrostatic law. 4. Pascal's law is applicable in the operation of a hydraulic press. Which of these statements are correct ?