# Linear Algebra - Linear Algebra

31:

Rank   of   the   matrix

 1 1 0 0

is
 A. 4 B. 2 C. 1 D. 0 Answer Report Discuss Option: C Explanation : Click on Discuss to view users comments. Write your comments here:
32:

Inverse of the matrix is

33:

The system of equations

2x + 4y = 10,

5x + 10y = 25 has

 A. no solution B. only one solution C. only two solutions D. infinite solutions Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. Write your comments here:
34:

For the following set of simulataneous equations:
1.5x - 0.5y = 2
4x + 2y + 3z = 9
7x+ y + 5z = 10

 A. solution is unique B. infinitely many solutions exist C. equations are incompatible D. finite number of multiple solutions exists Answer Report Discuss Option: A Explanation : By solving the equations, we will get x=178/11 , y=49/11 and z= -237/11. So the answer is 'A Click on Discuss to view users comments. Write your comments here:
35:

If matrix A is m x n and B is nx p, then number of multiplication operations and addition operations needed to calculate the matrix AB, respectively are

 A. mn2p,mpn B. mpn,(n-1) C. mpn,mpn D. mn2p, (m+p)n Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here: