PPSC Assistant Agricultural Department 2018, Maths MCQs, Number Series, PPSC Solved Past Papers MCQsComplete the series.1, 9, 25, 49,_______,121 ?A. 71 B. 61 C. 81 D. 91 Who introduced the theory of Natural Selection?If Aslam sold a book in Rs. 118 and he got 50% profit, then the cost price of the book was