Railways Sample papers

Cube Root Questions for Competitive Exams

cube root mcq

Worksheet on Cubes and Cubic roots:

Ques. Which of the following are cubes of even natural numbers?
(a) 512
(b) 3375
(c) 1728
(d) 1728
Ans. (a)

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Ques. Find the cube root of 33698267
(a) 26
(b) 420
(c) 54
(d) 323
Ans. (d)

Ques. The volume of a cubical box is 474.552 cubic metres. Find the length of each side of the box.
(a) 8.8 m
(b) 7.8 m
(c) 7.3 m
(d) 7.2 m
Ans. (b)

Ques. The volume of a cube is 9261000 m3. Find the side of the cube.
(a) 230 m
(b) 220 m
(c) 210 m
(d) 240 m
Ans. (c)

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Ques. By which smallest number must 35721 be divided so that the quotient is perfect cube?
(a) 1600
(b) 1728
(c) 49
(d) 6859
Ans. (c)

Ques. What is the smallest number by which 35721 must be multiplied, so that the products are perfect cubes?
(a) 7
(b) 5
(c) 49
(d) 27
Ans. (c)

Ques. Find the cube root of each of 140 x 2450:
(a) 70
(b) 60
(c) 50
(d) 40
Ans. (a)

Related: Data interpretation questions

Ques. Which of the following are cubes of odd natural numbers?
(a) 1728
(b) 4096
(c) 1000
(d) 343
Ans. (d)

Ques. Show that –216 / 42875 is the cube of a rational number. Also, find that rational number.
(a) –9 /25
(b) –7 /45
(c) –4 /35
(d) –6 /35
Ans. (d)

Ques. Find the cube root of 0.003375
(a) 0.12
(b) 0.13
(c) 0.15
(d) 0.18
Ans. (c)

Related: Syllogism practice questions with answers

Ques. Which of the following are cubes of even natural numbers?
(a) 13824
(b) 3375
(c) 456533
(d) 1728
Ans. (a)

Ques. Find the units digit of the cube root of 571787
(a) 7
(b) 6
(c) 5
(d) 4
Ans. (a)

Ques. By which smallest number must the 1600 be divided so that the quotient is perfect cube?
(a) 7
(b) 17
(c) 4
(d) 25
Ans. (d)

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Ques. Is 27/125 a cube of rational number?
(a) 3/7
(b) 3/5
(c) 3/5
(d) 9/25
Ans. (b)

Ques. Find the cube root 1.331
(a) 1.1
(b) 1.3
(c) 1.5
(d) 1.7
Ans. (a)

Ques. What is the smallest number by which 2560 must be multiplied, so that the products are perfect cubes?
(a) 343
(b) 25
(c) 17
(d) 27
Ans. (b)

Related: missing number in Series

Ques. Find the cube root of each of –2300 x 5290
(a) –60
(b) –230
(c) –23
(d) –58
Ans. (b)

Ques. Write the units digit of the cube of 109:
(a) 7
(b) 9
(c) 3
(d) 5
Ans. (b)

Ques. Find the cube root of 10648 / 12167
(a) 12 / 13
(b) 22 / 23
(c) 32 / 33
(d) 42 / 43
Ans. (b)

Related: Cloze practice tests

Ques. By which smallest number must 107811 be divided so that the quotient is perfect cube?
(a) 3
(b) 25
(c) 1728
(d) 4096
Ans. (a)

Ques. Which of the following are cubes of odd natural numbers?
(a) 6859
(b) 4096
(c) 2095
(d) 512
Ans. (a)

Ques. Find the cube root of “–571787”
(a) –83
(b) –53
(c) –27
(d) –76
Ans. (a)

Related: basic Trigonometry questions and answers

Ques. What is the smallest number by which 8192 must be divided so that quotient is a perfect cube?
(a) 16
(b) 20
(c) 2
(d) 10
Ans. (c)

Ques. What is the smallest number by which 7803 must be multiplied, so that the products are perfect cubes?
(a) 17
(b) 125
(c) 25
(d) 109
Ans. (a)

Ques. Find the cube root of “– 5832”
(a) –18
(b) 18
(c) 28
(d) -14
Ans. (a)

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Ques. Write the units digit of the cube of 833
(a) 7
(b) 9
(c) 4
(d) 2
Ans. (a)

Ques. By which smallest number must 8788 be divided so that the quotient is perfect cube?
(a) 4
(b) 25
(c) 6
(d) 343
Ans. (a)

Ques. Find the cube roots of 91125:
(a) 911
(b) 9
(c) 73
(d) 27
Ans. (c)

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Ques. Find the smallest number which when multiplied with 3600 will make the product a perfect cube.
(a) 27
(b) 60
(c) 90
(d) 33
Ans. (b)

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Vishal Arora

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