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The points in the graph below represent the halts of a lift for a durations of $1$ minute, over a period of $1$ hour.

Which of the following statements are correct?

  1. The elevator moves directly from any non-ground floor to another non-ground floor over the one hour period.
  2. The elevator stays on the fourth floor for the longest duration over the one hour period.
  1. Only i
  2. Only ii
  3. Both i and ii
  4. Neither i nor ii
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Migrated from GO Civil 4 years ago by Arjun

1 Answer

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From the graph we can see that movements between $1-2, 1-3, 1-5,2-3$ never happened. So, statement $1$ is not TRUE.

Statement $2$ is also FALSE as the elevator stays on fourth floor for $19$ minutes while it stays at ground floor for $21$ minutes.

So, Correct Option: D
Answer:

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