Mathematics-Cube and Cube Roots [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 10 of 64

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Question 1

Cube and Cube Roots
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Question

MCQ▾

If 225K is a perfect cube, then the value of K is:

Choices

Choice (4)Response
a.3
b.5
c.15
d.14

Question 2

Cube and Cube Roots
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Question

MCQ▾

If , the least value of ‘a’ is:

Choices

Choice (4)Response
a.6
b.3
c.9
d.Question does not provide sufficient data or is vague

Question 3

Cube and Cube Roots
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Question

MCQ▾

The cube of a number is 64 times the cube of another number. If the sum of the cubes of numbers is 8125, the difference of the numbers is:

Choices

Choice (4)Response
a.15
b.20
c.12
d.5

Question 4

Cube and Cube Roots
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Question

MCQ▾

The radius of a sphere is 2.1 m. Its volume is:

Choices

Choice (4)Response
a.38.808
b.38.808
c.38.808 cu m
d.38.808 cu cm

Question 5

Cube and Cube Roots
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Question

MCQ▾

Given that 729 = and 4.096 = , find the value of .

Choices

Choice (4)Response
a.14.4
b.14
c.4.8
d.27.5

Question 6

Cube and Cube Roots
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Question

MCQ▾

The value of is:

Choices

Choice (4)Response
a.-35
b.21
c.35
d.-21

Question 7

Cube and Cube Roots
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Question

MCQ▾

Calculate the value of .

Choices

Choice (4)Response
a.
b.
c.
d.

Question 8

Cube and Cube Roots
Edit

Question

MCQ▾

If 196K is a perfect cube, then the value of K is:

Choices

Choice (4)Response
a.5
b.6
c.14
d.7

Question 9

Cube and Cube Roots
Edit

Question

MCQ▾

The length of each side of a cubical box is 3.2 cm. Its volume is:

Choices

Choice (4)Response
a.32.77
b.32.77 cu m
c.32.77 cu cm
d.32.77

Question 10

Cube and Cube Roots
Edit

Question

MCQ▾

= ________.

Choices

Choice (4)Response
a.0.011
b.101
c.10.001
d.10.1