The value of det `|(a,0,0,0),(2,b,0,0),(4,6,c,0),(6,8,10,d)| is (A) 0 (B) `a+b+c+d` (C) `abcd` (D) none of these

The value of the determinant |{:(a, b,0), (0,a, b),(b,0,a):}| is equal to- a. a^3-b^3 b. a^3+b^3 c. 0 d. none of these

0. 012-:1. 5=? (a) 0.8 (b) 0.08 (c) 0.008 (d) none of these

If A= [(1,0,1), (0,0,1),(a,b,2)] , then a I+b A+2A^2 equals (a) A (b) - A (c) a b\ A (d) none of these

8 ml is equal to (a) 0.8 L (b) 0.08 L (c) 0.008 L (d) None of these

Let A=[(0,alpha),(0,0)] and (A+I)^(50)=50 A=[(a,b),(c,d)] Then the value of a+b+c+d is (A) 2 (B) 1 (C) 4 (D) none of these

The matrix A=[{:(0,0,2),(0,2,0),(2,0,0):}] is: a) scalar matrix b) diagonal matrix c) square matrix d) none of these

The values of x for which the matrix [[x+a,b,c],[a,x+b,c],[a,b,x+c]] is non-singular are (A) R-{0} (B) R-{-(a+b+c)} (C) R-{0,-(a+b+c)} (D) none of these

The value of 3/(25) is (a)1.2 (b) 0.12 (c) 0.012 (d) None of these

If the points (a, 0), (b,0), (0, c) , and (0, d) are concyclic (a, b, c, d > 0) , then prove that ab = cd .

If 14xx4=56 , then 0. 014xx4= (a) 0.56 (b) 5.6 (c) 0.056 (d) None of these