There are 7 students A,B,C,D,E,F and G who wake up at different time (4am, 5am ----- 10am) and studies different subject Maths, Chemistry, Economics, English, Biology, Accounts and Physics. The one who is not A wakes up earliest and studies English. F studies Economics. There is a 3 hour gap between G and the one who studies Maths who don’t wake up last. The one who study chemistry wakes up 2ndlast. The one who studies English wakes up at half of the time B wakes up. B and G wake up next to each other. Difference of wake up time of B and C is equal to the difference of wake up time of G and F. E don’ wake up at a time multiple of 2 and D studies Biology. B does not study Account.