PPSC Past Paper Sub Inspector Cooperative Societies 2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsWhich of the following units is ozone layer thickness expressed in?A. Joule B. Metro C. Dobson D. Pound Thimphu is the capital city of?If X+Y = 6, Y+Z = 7 and Z+X = 9, the average (arithmetic mean) of x,y and z is?
