Question
Who among the following are the persons who goes for
seminar on the first and the last day? Study the following information carefully and answer the given questions: There are ten persons namely A, B, C, D, E, F, G, H, I and J. They go for seminars on 12th and 25th of different months i.e., January, March, April, June and July but not necessarily in the same order. G goes for seminar in the month which have odd number of days but not in January. Four persons goes for seminar between G and H. E did not go for seminar on an even date. G goes for seminar before H. I goes for seminar in the month which has odd numbers of days. D goes for seminar on an even date of the month which has even number of days after E. A goes for seminar just before E. Only two persons goes for seminar between I and J. F goes for seminar just after C but not in April and January. Only three persons goes for seminar between B and F. E and F goes for seminar on the same date but different months.Solution
G goes for seminar in the month which have odd number of days but not in January. Four persons goes for seminar between G and H. G goes for seminar before H. We will have two cases: If G goes for seminar on 12th March, then H will goes for seminar on 25th June. If G goes for seminar on 25th March, then H will goes for seminar on 12th July. 
A goes for seminar just before E. E did not go for a seminar on an even date. F goes for seminar just after C but not in April and January. Only three persons goes for seminar between B and F. E and F goes for seminar on the same date but different months. If F goes for seminar on 25 th July, then B will goes for seminar on 25 th April and C will goes for seminar on 12 th July. E will goes for seminar on 25 th January. If F goes for seminar on 12th June, then B will goes for seminar on 12th March and C will goes for seminar on 25th April but this case will get discarded as we cannot place E. 
I goes for seminar in the month which has odd numbers of days. D goes for seminar on an even date of the month which has even number of days after E. Only two persons goes for seminar between I and J. I goes for seminar on 25th March. J goes for seminar on 12th June. D goes for seminar on 12th April. 
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