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There are 10 stations on a railway line. The number of different journey tickets that are required by the authorities is
  • a)
    10
  • b)
    90
  • c)
    81
  • d)
    100
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
There are 10 stations on a railway line. The number of different journ...
Explanation:

To calculate the number of different journey tickets, we need to consider the different combinations of starting and ending points on the railway line.

There are 10 stations, so the number of possible starting points is 10.

For each starting point, there are 9 possible ending points (excluding the starting point itself).

Therefore, the total number of different journey tickets that are required by the authorities is:

10 x 9 = 90

Hence, the correct answer is option B) 90.
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There are 10 stations on a railway line. The number of different journey tickets that are required by the authorities isa)10b)90c)81d)100Correct answer is option 'B'. Can you explain this answer?
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