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 17

a. 760
b. 190
c. 380
d. 72

ANSWER: 380
 
permutation and combination

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