Question

p= {x:x =3n+2,n€W and x<15}

Answer 1

p = 2(n=0)
Also, p =5(n=1)
Similarly, p= 8, 11, 14

Answer 2

"To determine: The cardinal number of the set p

Given Data:

p= {x:x=3n+2, belongs to W and x<15}

Formulas to be used:

Cardinal number of any finite set is the number of the unique elements in the set.

Calculation:

Given that n belongs to W. So n is a whole number.

So if n = 0, x = 3(0) + 2 = 2

If n = 1, x = 3(1) + 2 = 5

If n=2, x = 3(2) + 2 = 8

If n=3, x = 3(3) + 2 = 11

If n=4, x = 3(4) + 2 = 14

As x<15, the set will contain 5 elements which are "2", "5", "8", "11", "14".

Hence, the "cardinal number" of the set is 5"