Determinants Matrices Question 24
Question: If number of elements is 20 then how many different types of matrices can be formed if number of rows is always even ?
Options:
A) 3
B) 4
C) 5
D) 6
Show Answer
Answer:
Correct Answer: B
Solution:
- [b] $ \because 20=1\times 20=2\times 10=4\times 5=5\times 4 $
$ =10\times 2=20\times 1 $ Out of this number of rows is even so possible cases are $ 2\times 10,4\times 5,10\times 2 $ and $ 20\times 1 $ . So number of matrices are 4.
BETA
