PPSC Personal Staff Officer (BS-17) S&GAD 2020, Everyday Science MCQs, PPSC Solved Past Papers MCQsTreatment through vaccination was founded by?A. Louis Pasture B. Edward Jenner C. Jones Salk D. None of these 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?Muscular and nervous disorder are owing to lack of?
