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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

edited | 185 views
Migrated from GO Civil 7 months ago by Arjun
+1

as 1)false

at time 26 to 29 seconds...goes from floor 2 to 5.

2) false

4th floor time = 19 and ground floor time =21
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But sir we are going from floor 2 to 5 between time 27 to 30??Then why 1 is incorrect??
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@nandani17  here question saying tht elevator have moved from all non ground floor to some non ground floor but lift has moved only from floor 2 to 5 so its wrong

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.