Question
There are 4 red balls, 5 blue balls and 3 green balls in
a jar. 2 balls are drawn at random. Find the probability that both balls are either green or red.Solution
Given 4 red, 5 blue,3 green balls Total possible outcomes (selecting 2 out of 12 balls) = 12C2 = (12 × 11)/(2 × 1) = 66 ​Favorable outcomes (selecting 2 out of 4 red balls) = 4C2 = (4 × 3 × 2)/ (2 × 2 × 1) = 6 Favorable outcomes (selecting 2 out of 3 red balls) = 3C2 = (3 × 2)/ (2 × 1) = 3 => P(E) = (6 + 3)/66 = 9/66 = 3/22
Which of the following operating systems is an open-source?
In which of the following network topology, all devices on a network are connected to a single continuous cable?
Storage device found inside the computer is
In the field of computer/IT in open system interconnection on models, there are ____ layers.
Which layer of the OSI model provides the interface between the user and the network?
The largest unit of storage is
The most suitable type of network that phone lines would us is
_________ can be used to store a large number of files in a small amount of storage space. Â
Which of the following is not a type of operating system?
In an operating system, which memory management technique swaps out entire processes to free up memory space?
Relevant for Exams:
