PPSC Personal Staff Officer (BS-17) S&GAD 2020, Everyday Science MCQs, PPSC Solved Past Papers MCQsA baby Heart beat starts?A. With the birth of child B. After birth of child C. Before the birth of child D. None of above “To meet one’s Waterloo” means?Twelve Children take sixteen days to complete a work which can be completed by 8 adults in 12 days. After working for 3 days, sixteen adults left and six adults and four children joined them. How many days will take to complete the remaining work?
