AP EAMCET202315 May 2023Evening ShiftMathematicsPermutation and CombinationActual
If A= ( array ll a & b c & d array ): a, b, c, d -1,1 , , then the number of singular matrices in A is
Options
- A9
- B12
- C10
- D8
Correct answer
D. 8
Step-by-step solution
Given S= ( array ll a & b c & d array ): a, b, c, d -1,1 For singular a d-b c=0 a d=b c So number of singular matrices =2 2+2 2=8