Question

A= { ± 1. ± 2 , ± 3} then n(A) = ?​

Answer 1

Answer:

6

Step-by-step explanation:

A= { -3,-2,-1, 1, 2, 3 }

n(A) = 6 because there are both positive and negative elements in a set.

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Answer 2

Step-by-step explanation:

A= 1,2,3

n( a) =3

n( a)=2 n(a)

2³ =2×2×2

=8

the answer is =8