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3 and 4 .Determinants and Matrices
easy
જો કોઈ શ્રેણિકમાં બરાબર $8$ ઘટકો હોય, તો તેની શક્ય કક્ષાઓ કઈ હશે ?
Option A
Option B
Option C
Option D
Solution
We know that if a matrix is of order $m \times n,$ it has $mn$ elements. Thus, to find all possible orders of a matrix with $8$ elements, we will find all ordered pairs of natural numbers, whose product is $8$ .
Thus, all possible ordered pairs are $(1,8),\,(8,1),\,(4,2),\,(2,4)$
Hence, possible orders are $1 \times 8$ , $8 \times 1$, $4 \times 2$ , $2 \times 4$
Standard 12
Mathematics