Problem $2$ Problem $7$

Form a basis for $R^4$ from the columns of the following matrix. Justify your answer clearly.

the rank of this matrix?

Ans:

Draw the Venn diagrams for each of the following combinations of the sets $A,B,$ and $C.$

$($a$)A(BC)$

$($b$)\frac{?}{\text{b}\text{a}\text{r}}(A)\frac{}{b}ar(B)\frac{}{b}ar(C)$