Video: Rewind to repeat.
Pause to make note.
Exercise:
Q.1 State whether the following are well defined
or not?
a. All the colors in the rainbow.
b. All the points that lie on a straight line.
c. All the honest members in the family.
d. All the consonants of the English alphabet.
e. All the tall boys of the school.
f. All the hardworking teachers in a school.
g. All the prime numbers less than 100.
h. All the letters in the word GEOMETRY
Q.2 Rewrite these sets in description and in set
a. All the colors in the rainbow.
b. All the points that lie on a straight line.
c. All the honest members in the family.
d. All the consonants of the English alphabet.
e. All the tall boys of the school.
f. All the hardworking teachers in a school.
g. All the prime numbers less than 100.
h. All the letters in the word GEOMETRY
builder method.
a) A = {a, e, i, o, u}
b) B = {3, 6, 9, 12, 15)
c) C = {5, 7, 11, 13}
d) D = { 1, 2, 4, 8}
Q.3 Rewrite these sets in listing method.
A) N = { the natural numbers between 5 and 10 }
B) A = { letters of the word 'MATHEMATICS' }
C) P = {x : x is a natural number, x < 9}
D) Q = {y : y is an even number, y < 10}.
Q.4 On the basis of Q. 2 write the cardinal number of each sets.
