Three taps P, Q and R can fill a tank in 12 hrs, 15 hrs and 20 hrs respectively. If P is open all the time and Q and R are open for one hour each alternately, starting with Q, then the tank will be full in how many hours ? January 25, 2020 by mcq A) 9 hrs B) 7 hrs C) 13 hrs D) 11 hrs View AnswerOption – B. More QuestionsThe Main headquarters of Sahitya Akademi is located atA clock is set right at 8 a.m. The clock gains 10 minutes in 24 hours will be the true time when the clock indicates 1 p.m. on the following day?The probability that a number selected at random from the first 100 natural numbers is a composite number is ?A F Z U G L T _ Find the next letter in the above given letter series?Dicotyledonous weeds are destroyed by a chemical calledThe concept of Public Interest Litigation (PIL) originated inOne of the main issues discussed in the 40th Ministrial Meeting of the ASEAN held in August, 2007 wasWho invented Electric Generator?What happens when some charge is placed on a soap bubble?Where is RAM located?