Surveying
In observations of equal precision, the most probable values of the observed quantities are those that render the sum of the squares of the residual errors a minimum, is the fundamental principle of

D'Alembert's method
Gauss' Mid Latitude formula
Legendre's method
Least square method

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Surveying
Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations?

Measuring distance from two points on traverse line
Measuring angle and distance from one transit station
Measuring angles to the point from at least two stations
Measuring angle at one station and distance from other

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Surveying
Spring tides are caused when

None of these
Sun and moon are in line with earth
Solar tidal force and lunar tidal force both coincide
Solar tidal force acts opposite to lunar tidal force

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