Question

Write in roster form and write the cardinal number
B = {x :x € N, 3x - 6 < 9)

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Answer 1

Answer:

B={1,2,3,4}

cardinal number of B=n(B)=4

Step-by-step explanation:

B={X:x€N,3x-6<9}

3x-6<9

3x-6+6<9+6

3x+0<15

3x/3<15/3

X<5 , x€N

B={1,2,3,4}

cardinal number of B=n(B)

=4