Permutations and combinations - Quantitative Aptitude (MCQ) questions for Q. 29294
Q. On a railway line there are 20 stops. A ticket is needed to travel between any 2 stops. How many different tickets would the government need to prepare to cater to all possibilities?- Published on 11 Apr 17a. 760
b. 190
c. 380
d. 72
ANSWER: 380