A matrix \bo {A}= [a_{i j}] _{3 \times 3} is defined by a_{i j}={\\begin{array}{ccc}2 i+3 j & { &\end{array} i< j ; 5 { , }, i=j ; 3 i-2 j, { ,} i > j } The number of elements in A which are more than 5 , is:

CBSE Class 12 Math 2022 Term I Solved Paper - Question 24

Question : 24 of 50

Marks: +1, -0

A matrix

\bo {A}= [a_{i j}] _{3 × 3}

is defined by

a_{i j}={\{\table 2 i+3 j ,{, } \;\; i< j ; 5 { , }, i=j ; 3 i-2 j, { ,} i > j }

The number of elements in A which are more than 5 , is:

Solution:

Explanation: Here,

{\A}={[\table 5 , 8 , 11 ; 4 , 5 , 13 ; 7 , 5 , 5]}

Thus, number of elements more than 5 , is 4 .

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