Question

The number of all possible matrices of order 1×2 with entry 1 or​

Answer 1

Answer:

We have to create these matrices using 3 numbers that are 1,2 or 3.So, total number of all possible matrices are 34=81

Step-by-step explanation:

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Answer 2

$\huge \purple{ \underline{ \boxed{ \red{ \mathbb{ANSWER : }}}}}$

$\red{ \textsf{The number of all possible matrices of order 2x3 with entry 1 or 2 are 64 .}}$

$\huge \purple{ \underline{ \boxed{ \red{ \mathbb{EXPLANATION : }}}}}$

$\large \green{ \underline{ \underline{ \mathbb{GIVEN : }}}}$

$\orange{ \textsf{A matrix with order 2 x 3 :}}$

$\orange{\left[ \begin{array}{c c c} \bf{a11}&\bf{a12}& \bf{a13} \\ \bf{a21}&\bf{a22}&\bf{a23} \end{array}\right]}$

$\orange{ \textsf{Having entries 1 and 2 .}}$

$\large \green{ \underline{ \underline{ \mathbb{SOLUTION : }}}}$

$\red{ \textsf{a11 can have two entries 1 and 2 .}} \\ \red{ \textsf{a12 can have two entries 1 and 2 .}} \\ \red{ \textsf{a13 can have two entries 1 and 2 .}} \\ \red{ \textsf{a21 can have two entries 1 and 2 .}} \\ \red{ \textsf{a22 can have two entries 1 and 2 .}} \\ \red{ \textsf{a23 can have two entries 1 and 2 .}}$

$\red{ \textsf{Therefore , The number of all possible matrices of order 2 x 3 with entry 1 or 2 are :}}$

$\red{ \longrightarrow{ \mathbb{2 \times 2 \times 2 \times 2 \times 2 \times 2}}}$

$\red{ \longrightarrow{ \mathbb{ {2}^{6} }}}$

$\red{ \longrightarrow{ \mathbb{64}}}$

$\large \green{ \underline{ \underline{ \mathbb{KNOW \: MORE : }}}}$

$\orange{\mathbb{MATRIX : }}$

A matrix is an rectangular array having 'm' number of rows and 'n' number of columns .

$\orange{ \mathbb{ORDER \: OF \: MATRIX :}}$

A matrix having 'm' number of rows and 'n' number of columns is said to be matrix of order m x n .