A bus route has \(20\) different stops. A traveller wishes to travel from every stop to every other stop. How many

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A bus route has \(20\) different stops. A traveller wishes to travel from every stop to every other stop. How many different tickets will the traveller require?

A. \(260\)
B. \(340\)
C. \(380\)
D. \(420\)
E. \(720\)

The OA is C
Source: — Problem Solving |