Three pipes P,Q and R can fill a tank in 6 hours. After working all three together for 2 hours. R is closed and P and Q can fill the remaining part in 7 hours . The number of hours taken by R alone fill the thank is --

PSC DLRS Record Keeper গণিত আয়তক্ষেত্রের ক্ষেত্রফল

PSC DLRS Record Keeper BCS 25th BCS Preli - 2004 Primary Teacher Pre-Primary Teacher - 2015 Pre-Primary Teacher - 2014 DGFP FWV (Trainee) - 2010 NSI Field Officer - 2017 BRDB URDO - 2015 NTRCA 6th NTRCA - 2010 RAKUB RAKUB Officer - 2017 IFIC IFIC Asst. Officer - 2018 DTE – Head Assistant / Accountant / Computer Operator - 2021 MOR – Computer Operator - 2021 DSHE – Office Sohayak - 2021 TMED – Various Posts - 2021 CGA Office Sohayak - 2022 LGED – Office Sohayok - 2023 PDBF – Field Officer - 2025 DLRS Record Keeper - 2026 গণিত আয়তক্ষেত্রের ক্ষেত্রফল

PSC MoIB Assistant Information Officer BCS 37th BCS Preli - 2016 LGED Work Assistant - 2023 BR Train Controller - 2026 MoIB Assistant Information Officer - 2026 গণিত আয়তক্ষেত্রের ক্ষেত্রফল

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