If `1/x :1/y :1/z=2:3:5\ t h e n\ x : y : z` is equal to `2:3:5` b. `15 : 10 :6` c. `5:3:2` d. `6: 10 : 15`

If (1)/(x):(1)/(y):(1)/(z)=2:3:5backslash then backslash x:y:z is equal to 2:3:5 b.15:10:6c.5:3:2d.6:10:15

If x=1/3y a n d y=1/2, t h e n x : y : z is equal to 1:2:6 b. 1:3:6 c. 2:4:6 d. 3:2:1

If 5x^2-13 x y+6y^2=, t h e n x : y is 2:1 on l y b. 3:5 on l y c. 5:3 or 1:2 d. 3:5 or 2:1

5x + 10 y - 15 z = 5 (x + 2y - 3z)

If |z_1|=15 and |z_2-3-4i|=5,t h e n

If |z_1|=15 and |z_2-3-4i|=5,t h e n

Comprehension 1 Let x ,\ y ,\ z in R^+&\ D=|xx^3x^4-1y y^3y^4-1z z^3z^4-1| If x!=y!=z\ &\ x ,\ y ,\ z are in A.P. and D=o,\ t h e n\ 2x^2z+x^2z^2 is equal to a. 1 b. 2 c. 3\ d. none of these

The planes 2x - y + 4z = 3 and 5x - 2.5y + 10z = 6 are :

If ( x - 1 )^3 + ( y - 2 )^3 + ( z - 3 )^3 = 3 ( x - 1 ) ( y - 2 ) ( z - 3 ) and x - 1 != y -2 != z-3 , then x + y + z is equal to : ( A ) 2 ( B ) -6 ( C ) 6 ( D ) 4

If z_1a n dz_2 are the complex roots of the equation (x-3)^3+1=0,t h e nz_1+z_2 equal to a. 1 b. 3 c. 5 d. 7