PPSC Past Paper Assistant Planning & Development 2019 Solved MCQs, Books Authors MCQs, PPSC Solved Past Papers MCQsThe book “Pakistan: The Formative Phase” was written by?A. Ayesha Jalal B. Akbar S. Ahmed C. Khalid bin Saeed D. None of these What is the next in series for 2, 3, 6, 18, 108,?Which if the following was invented by Torricelli?