`1+3/2+5/2^2+7/2^3+……..to oo` is equal to (A) 3 (B) 6 (C) 9 (D) 12

If A=[(2,3),(5,-2)] then 9A^-1 is equal to (A) A\' (B) 2A (C) 1/2 A (D) A

If a : b = 5 : 2 , then ( a - b )/b is equal to : ( A ) 7/2 ( B ) 3/5 ( C ) 3/2 ( D ) 2/3

1+(3)/(2)+(5)/(2^(2))+(7)/(2^(3))+....oo is equal to

If ( x- 3 )/5 - 2 = -1 , then x is equal to ( a ) 8 ( b) 3 ( c ) -7 ( d ) 2

If the maximum and minimum values of y=(x^(2)-3x+c)/(x^(2)+3x+c) are 7 and (1)/(7) respectively then the value of c is equal to (A)3(B)4(C)5 (D) 6

If (2)/(2+(2)/(2+(2)/(x)))=3, then x is equal to -(4)/(7) (b) (4)/(7)(c)-(4)/(9)(d)(4)/(9)

If (x,3)+(2,5)=(7,8) then x is equal to a)2 b)5 c)7 d)9

Consider three matrices A=[(2,1),(4,1)], B=[(3,4),(2,3)] and C=[(3,-4),(-2,3)]. Then ghe value of the sum tr(A)+tr((ABC))/2 +tr((ABC)^2)/4+tr((ABC)^3)/2+.......+oo is (A) 6 (B) 9 (C) 12 (D) none of these

Value of (1+1/3)(1+1/(3^2))(1+1/(3^4))(1+1/(3^8))........oo is equal to a.3 b. 6/5 c. 3/2 d. none of these