PPSC Assistant Sub Inspector (2020) Anti-Corruption, Maths MCQs, PPSC Solved Past Papers MCQsThe mean proportional of 4 and 16 is ?A. +8 B. +16 C. +9 D. None of these A total of amendments to the constitution of 1973 have been passed by the Parliament?The Inner core of an optical fiber is _____ in composition ?
