Say true or false — task. Mathematics State Board, Class 9.

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1. If

$U = \{x : x \in \mathbb{Z}$ and

$-3 \le x \le 5\}$ ,

$A = \{-1$ ,

$2$ ,

$3$ ,

$4\}$ and

$B$

$= \{-2$ ,

$1$ ,

$3$ ,

$5\}$ , then

$n(A^{\prime}) = 3$ .

The given statement is .

2. If

$A$ and

$B$ are two finite sets, then

$n(A \cup B) = n(A) + n(B) + n(A \cap B)$ .

The given statement is.

$n(A^{\prime}) = n(U) - n(A)$ .

The given statement is.

Did you find an error?

2. Say true or false