What is rank of a matrix? Rank of a matrix A of size M x N is defined as (a) Maximum number of linearly independent column vectors… Read More

In an examination, 45% of total students failed in Hindi, 35% failed in English and 30% in both. The percentage of these who passed in… Read More

If we increase the price of a laptop by 30%, their sale will decreases by 20%. What would be the effect on the revenue receipts of the… Read More

If we increase the radius of a sphere by 40%. What would be the effective increase in surface area ? (A) 96% (B) 100% (C) 196%… Read More

What was the day of the week on January 2,1876 (A) Sunday (B) Monday (C) Tuesday (D) Wednesday Answer: (A) Explanation: Quiz of this QuestionPlease comment… Read More

Monica’ salary was reduced by 20%. Percentage increase to be effected to bring salary to original level = (A) 25 (B) 30 (C) 35 (D) 33… Read More

Sum of n terms of two series in A.P. are in the ratio (5n + 4) : (9n + 6) ,Find the ratio of their 13th… Read More

Neha and Sandy can do a piece of work in 24 day; Sandy and Tina in 30 days;Tina and Neha in 40 days. If all work together… Read More

An emergency vehicle travels 10 miles at a speed of 50 miles per hour. How fast must the vehicle travel on return trip if the… Read More

For understanding equivalence of Functional Dependencies Sets (FD sets), basic idea about Attribute Closuresis given in this article Given a Relation with different FD sets for… Read More

The semaphore variables full, empty and mutex are initialized to 0, n and 1, respectively. Process P1 repeatedly adds one item at a time to… Read More

A process executes the following segment of code : for(i = 1; i < = n; i++) fork (); The number of new processes created… Read More

In a certain operating system, deadlock prevention is attempted using the following scheme. Each process is assigned a unique timestamp, and is restarted with the… Read More

A disk has 200 tracks (numbered 0 through 199). At a given time, it was servicing the request of reading data from track 120, and… Read More

Consider the following C program:Attention reader! Don’t stop learning now. Practice GATE exam well before the actual exam with the subject-wise and overall quizzes available… Read More