Question
There are 6 blue pens, 5 black pens and 4 green pens in
a bag. Three pens are chosen randomly. Quantity I – The probability of their being 2 blue and 1 green pens. Quantity II – The probability of their being 1 blue, 1 black and 1 green pens. In each of the following questions, read the following questions, read the given statements and compare given two quantities on its basis:Solution
Total number of pens = 6 + 5 + 4 = 15 Three pens are chosen at random. Then, n(S) = ¹⁵C₃ = (15 ×14 ×13 )/(3 ×2 ×1) = 130 Quantity I. n(E) = ⁶C₂ × ⁴C₁ = 15 × 4 = 60 P(E) = 60/130 = 6/13 Quantity II. n(E) = ⁶C₁ × ⁵C₁ × ⁴C₁ = 6 × 5 × 4 = 120 P(E) = 120/130 = 12/13 ∴ Quantity I < Quantity II.
Which among the following can be called an electronic check ?
A system call that suspends the caller until another process wakes it up is:
When data changes in multiple lists and all lists are not updated, this causes
Switches work on which OSI layer?
What is the role of Key Distribution Center?
In DBMS, redundancy primarily leads to:
In computer terminology, ‘CAD’ stands for
In the OSI model, which layer is responsible for error detection and frame synchronization?
Which part of the Central Processing Unit (CPU) performs calculation and makes decisions :
In computer networking, LAN stands for:
Relevant for Exams:
