Distance between the points (1, 3, 2) and (2, 1, 3) is [MP PET 1988]
12
√12
√6
6
d=√1+4+1=√6.
All the points on the x- axis have [MP PET 1988]
A point moves so that the sum of its distances from the points (4, 0, 0) and (-4, 0, 0) remains 10. The locus of the point is [MP PET 1988]
Distinction between primary, secondary and tertiary alcohol is done by [MP PMT/PET 1988; RPMT 2000]
Gold number is [MP PET/PMT 1988]