Why aren't CS people scoring high in GATE?

Question

Highest mark in GATE CSE 2016: 88, 2015: 85 and in previous years too it is mostly the same.

In other branches like ME, EE etc 98, 99 marks are common.

What's the reason for this? Difficult/ambiguous questions are for all streams and this won't count for more than 5 marks. Moreover aptitude/mathematics portion are same for all streams.

Comments

for Gate 2016 - Highest normalised marks are 85.6

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yes, actual being 82 :)

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CS as a subject has more scope of tricky questions.. it is more involved in a way.. :P
i may be wrong as i havent studied other streams, but streams like Mechanical might have direct concepts and questions.. Once you know the concept, i think one can directly answer questions for Mechanical/Civil..
But in CS that is not true.. For e.g In Algorithms, the concepts remain same, but questions can be made very tricky and require a good amount of knowledge and practice to crack the tough ones..