Question

Q2) Write the following set in roster form:
B= {x: x= n3-2,n € N and 3<n<5}
Q3) Find the cardinal number of:
C={x : x=9n, n€w and n<10}
&
Q4) If D = {x: x= n2, n < 10) then find D when universal is the set of:
A) Natural numbers
B) Whole numbers
C) Integers
Q5) Write the following sets in set builder form:
i) A={16,25,36,49,64,81}
ii) B={3,6,9,12,15,18)​

Answer 1

Answer :

Q5) i)A= {x|x=n²,n∈N}

ii)B={x:x∈N and x is a multiple of 4}

N→ Set of all natural numbers.