Questions 71–80 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 8 of 65

Question 6

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“I put the brown paper in my pocket along with the chalks, and possibly other things. I suppose every one must have reflected how primeval and how poetical are the things that one carries in one’s pocket: the pocket-knife, for instance, the type of all human tools, the infant of the sword. Once I planned to write a book of poems entirely about the things in my pocket. But I found it would be too long: and the age of the great epics is past.”
(From G.K. Chesterton’s “A Piece of Chalk”)
Based only on the information provided in the above passage, which one of the following statements is true?
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Question 7

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In the diagram, the lines QR and ST are parallel to each other. The shortest distance between these two lines is half the shortest distance between the point P and line QR. What is the ratio of the area of the triangle PST to the area of the trapezium SQRT?
Note: The figure shown is representative.
Diagram for Mathematics question 7

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Question 8

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A fair six-faced dice, with the faces labelled ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, and ‘6’, is rolled thrice. What is the probability of rolling ‘6’ exactly once?
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Question 9

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A square paper, shown in figure (I), is folded along the dotted lines as shown in the figures (II) and (III). Then a few cuts are made as shown in figure (IV). Which one of the following patterns will be obtained when the paper is unfolded?
Note: The figures shown are representative.
Figures (I)–(IV):
Diagram for Mathematics question 9

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Question 10

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A shop has 4 distinct flavors of ice-cream. One can purchase any number of scoops of any flavor. The order in which the scoops are purchased is inconsequential. If one wants to purchase 3 scoops of ice-cream, in how many ways can one make that purchase?
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Question 11

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Let

be diagonalizable and

, where

. Then, which one of the following is TRUE?
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Question 12

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Given that the Laplace transforms of

,

and

exist, where

is the Bessel function. Let

be the Laplace transform of the Bessel function

. Then, which one of the following is TRUE?
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Question 13

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To find a real root of the equation

in the interval

by using the fixed-point iteration scheme, consider the following two statements:
S1: The iteration scheme

,

, converges for any initial guess

.
S2: The iteration scheme

,

, diverges for some initial guess

.
Then, which one of the following is correct?
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Question 14

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For the linear programming problem:
Maximize

Subject to





consider the following two statements:
S1: If

and

, then

forms an optimal basis.
S2: If

and

, then

forms an optimal basis.
Then, which one of the following is correct?
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Question 15

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Consider the following subsets of the Euclidean space

:

,

, and

.
Then, which one of the following is TRUE?
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