PPSC Past Paper Junior Clerk 2019 Revenue Department Solved MCQs, Internet MCQs, PPSC Solved Past Papers MCQswho is the father of Internet?A. Charles Babbage B. Vint Cref C. Denis Riche D. Martin Cooper Prophet Muhammad (PBUH) had _____ sons?His office is always in apple-pie order. what does the idiom/phrase “apple-pie order” means?