`(1 1/2+11 1/2+111 1/2+1111 1/2)` is equal to (a) 617 (b) 618 (c) `1234 1/2` (d) 1236

tan^(-1)1/(11)+tan^(-1)2/(11) is equal to (a) 0 (b) 1//2 (c) -1 (d) none of these

If a+(1)/(b)=1 and b+(1)/(c)=1, then c+(1)/(a) is equal to (a)0(b)(1)/(2)(c)1(d)2

A=[(1,2),(2,1)], then adjoint of A is equal to (A) [(1,-2),(-2,1)] (B) [(2,1),(2,1)] (C) [(1,-2),(-2,1)] (D) [(-1,2),(2,-1)]

If A= [[1,1],[-1,1]] , then A^(2) equals

If A=[0 1 2 1 2 3 3a1]a n d A_1=[1//2 12//12//-4 3c5//2-3//2 1//2] , then the values of a anti c are equal to 1,1 b. 1,-1 c. 1,2 d. -1,1

If A=[(1,1),(1,0)] and n epsilon N then A^n is equal to (A) 2^(n-1)A (B) 2^nA (C) nA (D) none of these

If log_(4)5=a and log_(5)6=b, then log_(3)2 is equal to (1)/(2a+1) (b) (1)/(2b+1)(c)2ab+1(d)(1)/(2ab-1)

If [(2,1),(3,2)] A[(-3,2),(5,-3)]=[(1,0),(0,1)] then a is equal to (A) [(0,1),(1,1)] (B) [(1,0),(1,1)] (C) [(1,1),(1,0)] (D) [(1,1),(0,1)]