Questions 41–43 of 43. Imported answers require independent review unless marked reviewed.

Topic practice 43 questionsPage 5 of 5

Question 63

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Trucks (10 m long) and cars (5 m long) go on a single lane bridge. There must be a gap of at least 20 m after each truck and a gap of at least 15 m after each car. Trucks and cars travel at a speed of 36 km/h. If cars and trucks go alternately, what is the maximum number of vehicles that can use the bridge in one hour?
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Question 64

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There are 3 Indians and 3 Chinese in a group of 6 people. How many subgroups of this group can we choose so that every subgroup has at least one Indian?
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Question 65

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GAMCQ2 marksNeeds review
A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at 25 m intervals in this plot.
Diagram for Production and Industrial Engineering question 65

The path from P to Q is best described by
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