GATE Overflow

GATE Overflow Books (PDFs)

From 2021 all PDFs from GATE Overflow will be released in our GitHub project. Please raise any issue on the GitHub page.

GO Hardcopy for GATE CSE 2025

For NIELIT PDFs

GATE CSE Book Update May 2021:

For Ordering of GATE Overflow book for GATE CSE 2022 (Hardcopy)

GO 2020

GO2020 Vol 3: Questions Only CO & Architecture, Databases, Operating Systems, Computer Networks

Change Logs

Update July 2018

This is a major update with regard to formatting. Content wise GATE 2018 and a few other new questions were added. Most of the images were redrawn and most of the contents were formatted using Latex. Also, a different version was made for printing with BW theme and QR codes for all reference links.

Update September 2017

This is a minor update over the last one removing some non-previous year questions which happened to come by mistake and also removing the background for questions and answers for better print quality.

Update July 2017

GO PDF is now being made available in multiple volumes due to the large size of the PDF and for ease of printing. The first one containing Engineering Mathematics, Discrete Mathematics, and General Aptitude can be downloaded from below link. GO classroom account is same as GO account with a new password which is automatically emailed to all GO users. You can enroll on GATE 2018 course (all courses are free) and get a notice for further PDFs or any other updates.

Update on GO PDF hard copy shall be given by August second week.

For new book notifications please enroll in the below course

http://classroom.gateoverflow.in/course/view.php?id=4

New Features:

  • GATE 1987-1990 and 2017 questions added
  • New color scheme
  • ISI/CMI questions also added
  • Questions in each topic are now counted
  • All the questions are classified to a topic

Update October 2016

This is the recommended book by me for Q/A for GATE. Last year, exams like ISRO, IIIT-H and some PSU exams including Kerala had many previous year GATE questions ditto. Though such things happen only for aptitude section in GATE, many other questions are derivatives of previous year questions. TIFR questions are also of the same level if not a bit harder. I do not recommend any other questions.

New features:

  • Added number of questions to each Category
  • Better Topic listing
  • Ability to move to topic heading from any question and category head from any topic
  • Moved all answers to end of each topic
  • Topics added as bookmark in supported PDF viewers

Update April 2016

Some features:

  • Tags added to each question
  • Questions are ordered not only by subject but also by topic
  • Up-votes for answers showing the amount of acceptance

Arjun Suresh

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Arjun Suresh
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Answered: GATE CSE 2022 | Question: 38

Ans : B,C,D are false L1 is classic example of not CFL . But Compliment of {WW} is CFL . L2 is DCFL as for every b we will pop a and will do nothing on c . L3 is DCFL as for every c we will pop b do nothing on a. CFL/DCFL  is not closed under Intersection .   [...]

Answered: GATE Electrical 2023 | GA Question: 9

Although with cyclicity this would be easy. Here is an alternative using binomial theorem only: $3^{999} \equiv 3 (10 - 1)^{499} \equiv 3 (10 - 1) \equiv - 3 \equiv 7 \text{ mod } 10$ and $7^{1000} \equiv (10 -3)^{1000} \equiv (-1)^{1000} (3)^{1000} \equiv (10 - 1)^{500} \equiv 1 \text { mod 10}$ Now $(3^{999} \times 7^{1000}) \text { mod }  10 \equiv \left[(3^{999} \text{ mod } 10) \times (7^{999} \text{ mod } 10)\right] \text { mod 10 } \equiv 7 \text { mod } 10 \equiv 7.$ [...]

Answered: B tree dbms

In the first level = 19 index In the second level = (20) * 19 = 380 In the third level = (20*20) * 19 = 7600 Total = 7999 I have seen this question many times seems like the options are wrong all other answers were also giving the same result. [...]

Answered: GATE CSE 2007 | Question: 59

I think the answer is option B, I am not going to describe everything but I will say this, see where we subtract cross product result with the actual result, now here is the catch say one female student has enrolled into every subject will she be appearing on the list, No because when taking the cross product with female std if and all the subjects and subtracting with set where a female has taken all subjects will cancel and we will not the get of female students who have taken all courses but only I'd of female STDs who [...]

Answered: GATE CSE 2018 | Question: 45

after x becomes 1 ; there is y = y-1 so y goes from (2 to 1023) OR total 1022 times therefore 10 + 1022*10 = 10230   [...]

Answered: NIELIT Scientific Assistant A 2020 November: 88

In each iteration of the bubble sort, the ith largest element finds its correct position.For example, given the sequence 1, 2, 4, 3, in the first pass, 4 moves to its correct position [1, 2, 3, 4]. But bubble sort will do another pass to check it is sorted or not Subsequently, as there are no swaps in the second pass, the algorithm recognizes that the array is sorted and terminates.Hence, in just two passes, we achieve a sorted array [...]

Answered: CAT 2015 | Question: 31

c [...]

Answered: CAT 2023 Set-3 | Quantitative Aptitude | Question: 2

B [...]

Answered: CAT 2023 Set-3 | Quantitative Aptitude | Question: 3

d [...]

Answered: CAT 2023 Set-3 | Quantitative Aptitude | Question: 5

9 [...]

Answered: CAT 2023 Set-3 | Quantitative Aptitude | Question: 1

B [...]

Answered: CAT 2020 Set-3 | Question: 52

Given information: - Dick is thrice as old as Tom. Let Tom's age be x. - Harry is twice as old as Dick. - Dick's age is 1 year less than the average age of all three. Step 1: Express Dick's age in terms of Tom's age (x). Dick's age = 3x Step 2: Express Harry's age in terms of Dick's age. Harry's age = 2 × Dick's age = 2 × 3x = 6x Step 3: Set up an equation for Dick's age being 1 year less than the average age of all three. Dick's age = (Tom's age [...]