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reviewed on September 28, 2018
There are eight persons A, B, C, D, E, F, G and H living on a nine-floor building with one of the floor being vacant (Ground floor is numbered 1 and topmost floor is number 9) but not necessary in the same order. Two persons live between G and B, who does not live on an even numbered floor. H...
reviewed on September 30, 2018
its so easy to learn 😊😊😊😊 thank you sir and i must finished watching all your video thanks God thankyou God bless us