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More Questions on This Topic :

Question 1. What is the longest possible distance to reach D, starting from A? Assume that no city can be visited twice.
  1.    60 km
  2.    70 km
  3.    80 km
  4.    None of these
Answer: Option B
: B

70 KmA – B – C – F – I – H – G – D orA – B – C – F – I – H – E – DChoice (2)

Question 2. If A’s house in Bangalore is red and D’s house is white, then E owns a
  1.    black in Bombay
  2.    blue in Jaipur
  3.    black in Jaipur.
  4.    blue in Bombay
Answer: Option B
: B

If A’s house is in Bangalore, then E can own only a house in Jaipur. If A’s house is red and D’s white, then E can own only a blue house (because C’s house cannot be blue). Hence, E has a blue house in Jaipur. Choice 2

Question 3. If B owns a house in Bangalore and C’s house is black, then A can own a
  1.    white in Jaipur
  2.    red in Jaipur
  3.    blue in Bombay
  4.    blue in Jaipur
Answer: Option C
: C

If B owns a house in Bangalore, then A must own a house in Bombay (because E cannot own a house in Bombay).(Choice (3)(Note: If C’s house is black, then A’s house can be blue, red or white.)

Question 4. In how many ways can a man reach D, starting from A such that the person does not visit the same city twice?
  1.    5
  2.    9
  3.    7
  4.    None of these
Answer: Option D
: D

From F there are three ways to reach D.From E there are three ways to reach D.From A to E there are two ways; from A to F there are two ways.By comparing the above ways we get that there are 8 ways in total.Choices (4)

Question 5. If A owns a white house in Bombay, then E’s house can be
  1.    red in Bangalore
  2.    blue in Bangalore
  3.    Green in Bombay
  4.    black in Jaipur
Answer: Option D
: D

If A owns white house in Bombay, then E will own a house in Jaipur (because B cannot own in Jaipur). Only choice (4) Jaipur. (Also not that if A owns a white house, then the colour of E’s house can be blue, red or black).Choice (4)