New Public School has a circular layout. The school has teachers specializing in various subjects. All classrooms of the schol are equally spaced apart adn located along its perimeter. Each teacher needs to take 4 classes in a day. There is a strange rule. The first and last class has to be in the same class room. The other two classes have to be at two other distinct class rooms
Ques. Bharti is a history teacher. In addition to above rules of the school, she teachers exactly one pair of successive classes in adjacent classrooms. How many distinct trips to class rooms are possible for Bharti. IF there are 12 classrooms in the school.
A)120
B)96
C)576
D)496
Ques. Ram is a math teacher. He never teaches two successive classes at two adjacent classrooms. How many distinct trips to class rooms are possible for Ram if there are 9 classrooms in the school
A)72
B)324
C)30
D)180

• 12c1[2.8+(1+1+7.2)+(1+1+7.2)]
  =12[16+16+16]
  =12*48
  =576
• 11 years agoHelpfull: Yes(3) No(1)
• The answer of 2nd question seems to be 180(20*9)
• 11 years agoHelpfull: Yes(2) No(2)
• @sumit acc. to me ans. is 576
  
• 11 years agoHelpfull: Yes(1) No(0)
• The answer of 1st comes out to be 496. Its explanation is long and lengthy process. can't explain without diagram in such a short place
• 11 years agoHelpfull: Yes(0) No(1)
• @sumit r u sure???? d answer of 1st ques is 496?
• 11 years agoHelpfull: Yes(0) No(2)
• not sure it is eitner 496 or 576.u tell what is your answer
• 11 years agoHelpfull: Yes(0) No(0)
• Can anyone give me outline of the solution process plz?
  
• 11 years agoHelpfull: Yes(0) No(0)
• can anyone please mail me the study material at anjalilathiya@gmail.com... i have eltimus test on this sunday...
• 11 years agoHelpfull: Yes(0) No(0)
• 2nd Q-> 180
  9c1[2.4+4.3]
  =180
  
• 11 years agoHelpfull: Yes(0) No(1)