PnC Playlist
From where should I study PnC, I have watched takshazila lectures,afterboards capsules, I have also completed topic tests till LOD3 , takshazila practice sets and some coaching modules. Yet I do not have confidence in the topic, can anybody reccomend a playlist to study PnC in depth


Why are we taking NB as 3x? If the distance from N towards A is one quarter of the distance to B , shouldn't NB be 4x?
In this question, even the times at which the shuttle arrives are being counted. Like if we start from 12, then we are also considering that if the person arrives at 12:20 which is also the time at which the local shuttle arrives as a part of the outcomes in which the person will have to wait for more than 6 minutes. But they arrive at the same time so why are we considering that the person will wait till 12:35 when the local shuttle too arrives at 12:20?
By solving this we get one root as 4 and another as 2^-1/3, which is irrational. So both option 1 and 3 are correct then.
In this question, as it was specifically 9, after accounting for atleast one in each of the 4 dice we get a+b+c+d=5 and here each of a,b,c,d can be max 5 meaning each dice can be max 6 so that is valid. But how to solve such a sum if instead of 9, it was asked for something bigger like 12?
In this set, it was stated that at least one car of each variant belonging to each of the three brands was sold. Then in the solution- b cannot be 15 or 5 right because if it is than the diesel jacks and diesel vault would become 0. Then b can only take 9 values....
How does this work for minimum value of intersection
Is diagram the only way to approach? Or is there any ither way to solve it?