If `x : y=2:3\ a n dy : z=2:3,\ ` then `x : z=` 2:3 (b) 3:4 (c) 5:7 (d) 4:9

If x : y=2:3 and y : z=2:3 , then x : z= (a) 2:3 (b) 3:4 (c) 5:7 (d) 4:9

If x:y=2:3 and y:z=2:3, then x:z=2:3(b)3:4(c)5:7 (d) 4:9

If 2x=3y\ a n d\ 4y=5z , then x : z= (a) 4:3 (b) 8: 15 (c) 3:4 (d) 15 :8

if 3x-4y+2z= -1, 2x+3y+5z=7, x+z=2, then x=

If 3x-4y+z=7; 2x-z+3y=19 ; x+2y+2z=24 , then what is the value of z ? (a) 4 (b) 5 (c) 6 (d) 8

2x + 3y-5z = 7, x + y + z = 6,3x-4y + 2z = 1, then x =

The number of solutions of the system of equations: 2x+y-z=7,\ \ x-3y+2z=1,\ \ x+4y-3z=5 is (a) 3 (b) 2 (c) 1 (d) 0

If the equation of the sphere through the circle x ^(2) +y ^(2) + z ^(2) = 9, 2x + 3y + 4z = 5 and through the point (1,2,3) is 3 (x ^(2) + y ^(2) + z ^(2)) - 2x - 3y - 4z = C, then the value of C is