If a Siren sounds for every 5 seconds, how many times will it sound in ¾ of an hour?

B. 541 TIMES
Posted in:  Clock Puzzels -  Puzzle Test -  Verbal Reasoning

There are six persons A, B, C, D, E and F in a school. Each of the teachers teaches two subjects, one compulsory subject and the other optional subject. D's optional subject was History while three others have it as compulsory subject. E and F have Physics as one of their subjects. F's compulsory subject is Mathematics which is an optional subject of both C and E. History and English are A's subjects but in terms of compulsory and optional subjects, they are just reverse of those of D's. Chemistry is an optional subject of only one of them. The only female teacher in the school has English as her compulsory subject. Which of the following groups has History as the compulsory subject ?

D. A, B, C

Five plays A, B, C, D and E are to be staged from Monday to Friday of a week. On a each day, only one play will be staged. D or E should not be either the first or last to be staged. E should be immediately followed by C. B should be staged immediately after D. One play is staged between A and B. Which play was staged on Wednesday ?

B. B

There are five friends A, B, C, D and E. Two of them are businessmen while the other three belong to different occupations viz. medical, engineer and legal. One businessman and the lawyer stay in the same locality S, while the other three stay in three different localities P, Q and R. Two of these five persons are Hindus while the remaining three come from three different communities viz. Muslim, Christian and Sikh. The lawyer is the oldest in age while one of the businessmen who runs a factory is the youngest. The other businessman is a cloth merchant and agewise lies between the doctor and the lawyer. D is a cloth merchant and stays in locality S while E is a Muslim and stays in locality R. The doctor is a Christian and stays in locality P, B is a Sikh while A is a Hindu and runs a factory. What is B's occupation ?

C. LAWYER

Six lectures A, B, C, D, E and F are to be organised in a spam of seven days -- from Sunday to Saturday, only one lecture on each day in accordance with the following :
  1. A should not be organised on Thursday.
  2. C should be organised immediately after F.
  3. There should be a gap of two days between E and D.
  4. One day there will be no lecture (Friday is not that day), just before that day D will be organised.
  5. B should be organised on Tuesday and should not be followed by D.
How many lectures are organised between C and D ?

C. TWO