If x +y =6 y +z = 4 and z +x = 2 then 2y -z -x ?
A
o
B
2
C
8
D
6
Correct Answer: 6
Given, x + y = 6 y + z = 4 z + x = 2 so, 2(x + y + z) = 12 বা, x + y + z = 6 বা, y + 2 = 6 so, y = 4 2y - z - x = 2 * 4 - 2 = 6