Among five friends B, C, D, E and F each studies in a

Solution

Only three students are senior to B. C is senior to B but junior to D. It means B studies in 5^th standard. C studies in a standard which is an even number. C studies either in 8^th or 10^th standard. D is F’s senior but does not study in 12th standard. D does not study in 12^th standard it means D studies in 10^th standard. D is F’ senior that means F studies in 2^nd standard. E is the one who studies in 12^th standard. So, case 2 will get discarded. Final arrangement as shown below: