Questions 711–715 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 72 of 72

Question 63

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1200 men and 500 women can build a bridge in 2 weeks. 900 men and 250 women will take 3 weeks to build the same bridge. How many men will be needed to build the bridge in one week?
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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 64

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The number of 3-digit numbers such that the digit 1 is never to the immediate right of 2 is
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Question 65

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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 Electronics and Communication Engineering question 65

The path from P to Q is best described by
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Question 65

Open question
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 Electronics and Communication Engineering question 65

Which of the following is the steepest path leaving from P?
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