Instructions

There are 5 cities, A, B, C, D and E connected by 7 roads as shown in the figure below:




Design a route such that you start from any city of your choice and walk on each of the 7 roads once and only once, not necessarily returning to the city from which you started.

Question 46

How many different starting cities are possible such that the above restriction is satisfied?

Solution

We can start from either city C or D. 

C - A - B - D - C - B - E - D

D - B - A - C - B - E - D - C

We cannot start from any other city.


Create a FREE account and get:

  • All Quant CAT complete Formulas and shortcuts PDF
  • 35+ CAT previous year papers with video solutions PDF
  • 5000+ Topic-wise Previous year CAT Solved Questions for Free

cracku

Boost your Prep!

Download App