A room has three electric lamps. From a collection of 10 electric bulbs of which 6 are good 3 are
It is given that the events A and B are such that P(A) = 1/4, P(A/B) = 1/2 and P(B/A) = 2/3. Then
In which compounds does vanadium have an oxidation number of +4?
1) NH4
Physics