A matrix A= [a_ i j ]_ 3 3 is defined by a_ i j = cc 2 i+3 j & , … - Vidyadip

MCQ

A matrix $A=\left[a_{i j}\right]_{3 \times 3}$ is defined by $a_{i j}=\left\{\begin{array}{cc}2 i+3 j & , \quad i<j \\ 5 & , \quad i=j \\ 3 i-2 j & , \quad i>j\end{array}\right.$

The number of elements in A which are more than 5 , is 4 :

A
5
B
6
✓
4
D
3

✓

Answer

Correct option: C.

4

(c) 4
Explanation: Here, A $=\left[\begin{array}{ccc}5 & 8 & 11 \\ 4 & 5 & 13 \\ 7 & 5 & 5\end{array}\right]$
Thus, number of elements more than 5 , is 4 .

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