Question
There are 120 balloons of three different colours in a
box. The ratio of red balloons to yellow balloons is 2:3, and the ratio of red balloons to green balloons is 4:5. How many red balloons are there?Solution
Let number of red balloons be 2x Yellow balloons = 2x × (3/2) = 3x Green balloons = 2x × (5/4) = 2.5x ATQ: 2x + 3x + 2.5x = 120 Or, 7.5x = 120 So, x = 16 Number of red balloons = 2 × 16 = 32
Which of the following describes the difference between Windows and Unix/Linux file systems?
In Data Communication, what protocol is used to ensure reliable transmission of data over a network?
In Data Structures, which of the following algorithms uses the Divide and Conquer strategy?
What is the time complexity of inserting an element in a heap?
Which data structure is used in BFS (Breadth-First Search)?
Which of the following is true for the time complexity of binary search?
Depth-First Search (DFS) typically uses which data structure implicitly or explicitly?
In a relational database, what is the purpose of a foreign key?
Which application layer protocol is used to retrieve emails from a remote server?
Which page replacement algorithm replaces the page that will not be used for the longest period of time in the future?
Relevant for Exams:
