Lesson 4

Question 1

Vector has _________ and direction

Answer 1

Magnitude

Question 2

Matrix has ____ dimensions

Answer 2

2

Question 3

Matrix with equal number of rows and columns is called ___________ matrix

Answer 3

Square

Question 4

Matrix, where off-diagonal elements are same, is called : ________
eg: [1,2,3; 2,5,1;3,1,6]

Answer 4

Symmetric

Question 5

Curly brackets in python denote ______ or ___________.

Answer 5

Set or dictionary

Question 6

Dictionary in python is a set of __ - _____ pairs

Answer 6

Key - value

Question 7

What is the magnitude of null set

Answer 7

0

Question 8

What is null set denoted by

Answer 8

phi symbol

Question 9

Subset notation?

Question 10

proper subset notation

Question 11

Formula for jaccard measure

Answer 11

a intersection b / a U B

Question 12

What range does jaccard value have

Answer 12

0 -1

Question 13

What does jaccard value quantify

Answer 13

similarities between sets

Question 14

What does JS(A,B) = 0.2 mean

Answer 14

That the sets are disssimilar

Question 15

Matrix multiplication is commutative. True or false

Answer 15

False

Question 16

Number of rows of first matrix should be equal to number of columns in second matrix for multiplication. True or false

Answer 16

False.
1st matrix column = second matrix row.

Question 17

A = mn
B = nc
Dimensions of A*B =

Answer 17

m*c