☁ Four members of a band ☁
Four members of a band are walking to a night concert. They decide to take a shortcut, but must vượt qua, cross a bridge. Luckily they have one flashlight. Because of the varying size of their instruments, it takes each member a different amount of time to vượt qua, cross the bridge - it takes the first person one minute, the một giây person two minutes, the third person five phút and the fourth person ten minutes. They must vượt qua, cross the bridge in pairs, travelling at the slower speed so if the one một phút person went with the ten một phút person, it would take a total of ten minutes. Since there is only one flashlight, one person must come back across the bridge, then another pair can cross. They only have 17 phút to vượt qua, cross the bridge and still get to the buổi hòa nhạc on time. What order should they vượt qua, cross to get everyone across and get to the concert?