Ten persons A, B, C, D, E, P, Q, R, S and T are going for vacations on two different dates i.e. 15th and 20th of five months viz. March, April, July, August and September.
Four persons goes between C and E, who goes after C. T goes on vacation on one of the months before C. Both C and T goes in the same date. Two persons goes between B and T. Q goes on vacation in one of the months which has 30 days but not on 20th. D goes immediately after T. Four persons goes between A and S. S goes on vacation before R and after P.
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