Question

Write the following set in roster form :
a) A = {Set of all prime factors of 210}
b) B = {x|x is an integer and -5<x<5}
c) C = {x|x is an integer, x²≤25}
d) D = {x|x is a perfect cube natural number and x≤125}
e) E = {x|x is an integer and -3≤x≤3}​

Answer 1

Answer:

• A = {2, 3, 5, 7}
• B = {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4}
• C = {-5, -4, -3, -2, -1, 1, 2, 3, 4, 5}
• D = {1, 2, 3, 4, 5}
• E = {-3, -2, -1, 0, 1, ,2, 3}

Step-by-step explanation:

a) A = {Set of all prime factors of 210}

Factors of 210 is 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105 and 210

A = {2, 3, 5, 7}

b) B = {x|x is an integer and -5<x<5}

B = {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4}

c) C = {x|x is an integer, x²≤25}

C = {-5, -4, -3, -2, -1, 1, 2, 3, 4, 5}

d) D = {x|x is a perfect cube natural number and x≤125}

D = {1,2,3,4,5}

e) E = {x|x is an integer and -3≤x≤3}​

E = {-3, -2, -1, 0, 1, ,2, 3}