PPSC Past Paper Assistant (Population Welfare Department-2019)Solved MCQs, Maths MCQs, Number Series, PPSC Solved Past Papers MCQsWhich one of the following number complete the series 21, 5, 8, 11, 14 ______?A. 18 B. 17 C. 19 D. 16 Evaluate 0.213/0.00213?Lethargy means?