If `A =(1/3)B` and `B =(1/2)C,` then `A : B : C` is
A) `1:3:6`
B) ` 2:3:6`
C) `3:2:6`
D) `3:1:2`

If 2a=3b=4c , then a : b : c= (a) 2:3:4 (b) 3:4:6 (c) 4:3:2 (d) 6:4:3

If a ,b and c are in A.P. and b-a ,c-b and a are in G.P., then a : b : c is (a). 1:2:3 (b). 1:3:5 (c). 2:3:4 (d). 1:2:4

If ^(n+1)C_3=2.^nC_2, then n= (A) 3 (B) 4 (C) 5 (D) 6

if A={1,2,3,4,5},B={2,4,6}and C={3,4,6} , then (Acup B) cap C is

If (x-2)/3=(2x-1)/3-1, then x= (a) 2 (b) 4 (c) 6 (d) 8

If y=3^(x-1)+3^(-x-1) , then the least value of y is (a) 2 (b) 6 (c) 2//3 (d) 3//2

If A is a matrix of order 3 and |A|=8 , then |a d j\ A|= (a) 1 (b) 2 (c) 2^3 (d) 2^6

If A={1,2,3,4,5}, B={1,2,3,6,7} and C{8}, then find (A-B) xx C .

If x=2+2^(2//3)+2^(1//3) , then the value of x^3-6x^2+6x is (a) 3 b. 2 c. 1 d. -2

If x=2/(3+sqrt(7)) , then (x-3)^2= (a)1 (b) 3 (c) 6 (d) 7