If `a=-2`,`b=-1`,then `a^(b)-b^(a)` is equal to
a) -1
b) 0.5
c) -2
d) -1.5

(1/5)^0 is equal to (a)0 (b) 1/5 (c) \ 1 (d) 5

(2^-1+3^-1+5^-1)^0 is equals to: a) 2 b) 3 c)5 d)1

5.The value of (i^(4x+1)-i^(4x-1))/(2) is equal to (a) 1 (b) -1 (c) -i (d) 0

If A and B are two matrices such that A B=A and B A=B , then B^2 is equal to (a) B (b) A (c) 1 (d) 0

If A-B=pi//4 , then (1+t a n A)(1-t a n B) is equal to 2 b. 1 c. 0 d. 3

2. 5+3. 05-4. 005\ is equal to: (a) 1.545 (b) 1.455 (c) 1.554 (d) 0.545

If (log)_4 5=aa n d(log)_5 6=b , then (log)_3 2 is equal to 1/(2a+1) (b) 1/(2b+1) (c) 2a b+1 (d) 1/(2a b-1)

If (log)_4 5=aa n d(log)_5 6=b , then (log)_3 2 is equal to 1/(2a+1) (b) 1/(2b+1) (c) 2a b+1 (d) 1/(2a b-1)

If a+b+c=0 , then (a^2)/(b c)+(b^2)/(c a)+(c^2)/(a b)=?\ (a)0 (b) 1 (c) -1 (d) 3

If A=[(2,3),(5,-2)] then 19A^-1 is equal to (A) A\' (B) 2A (C) 1/2 A (D) A