UPSC Exam  >  UPSC Tests  >  CSAT Preparation  >  Test: Cubes And Cube Roots- 1 - UPSC MCQ

Test: Cubes And Cube Roots- 1 - UPSC MCQ


Test Description

10 Questions MCQ Test CSAT Preparation - Test: Cubes And Cube Roots- 1

Test: Cubes And Cube Roots- 1 for UPSC 2024 is part of CSAT Preparation preparation. The Test: Cubes And Cube Roots- 1 questions and answers have been prepared according to the UPSC exam syllabus.The Test: Cubes And Cube Roots- 1 MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Cubes And Cube Roots- 1 below.
Solutions of Test: Cubes And Cube Roots- 1 questions in English are available as part of our CSAT Preparation for UPSC & Test: Cubes And Cube Roots- 1 solutions in Hindi for CSAT Preparation course. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free. Attempt Test: Cubes And Cube Roots- 1 | 10 questions in 10 minutes | Mock test for UPSC preparation | Free important questions MCQ to study CSAT Preparation for UPSC Exam | Download free PDF with solutions
Test: Cubes And Cube Roots- 1 - Question 1

What is the smallest number by which 72 must be multiplied to make it a perfect cube?

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 1

Prime factorising 72, we get, 72 = 2×2×2×3×3  We know, a perfect cube has multiples of 3 as powers of prime factors. Here, number of 2's is 3 and number of 3's is 2. So we need to multiply another 3 in the factorization to make 72 a perfect cube.

Test: Cubes And Cube Roots- 1 - Question 2

What is the cube of double of ‘a’?

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 2

Double of a here a+a=2a

So cube of (2a)³=8a³

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Cubes And Cube Roots- 1 - Question 3

Which of the following is the cube root of 27000?

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 3

Test: Cubes And Cube Roots- 1 - Question 4

A natural number is said to be a perfect cube, if it is the cube of some ________.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 4

A natural number is said to be a perfect cube if it is the cube of some natural number.
Example
8 = 2 x 2 x 2
8 = 2 3
8 is the perfect cube because it is a cube of 2 which is a natural number.
But 12 is not a perfect cube because it is not a cube of any natural numbers.

Test: Cubes And Cube Roots- 1 - Question 5

36 x K is a perfect cube number, then K = ______

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 5

6×6=36 and 36×6=216, which is the cube of 6.

Test: Cubes And Cube Roots- 1 - Question 6

Express 6as the sum of odd numbers.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 6

We know,

⇒ 31 + 33 + 35 + 37 + 39 + 41 = 216

And the cube of 6 is also 216

⇒ 6 × 6 × 6 = 216

Test: Cubes And Cube Roots- 1 - Question 7

Ones digit of cube of a number depends on the ________ of the number.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 7

For example, 11*11*11=121*11
Where one’s digit depends on 1,

121*11=1331 where again one’s digit depends on 1.

Hence one’s digit of a perfect cube of a number depends on one’s digit.

Test: Cubes And Cube Roots- 1 - Question 8

The numbers 1, 8, 27... are ____________.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 8

1×1×1 =1  

2×2×2 = 8

3×3×3 = 27

4×4×4 = 64

5×5×5 = 125

Hence all are cubes

Test: Cubes And Cube Roots- 1 - Question 9

Ones place digit in the cube of 5832 is ______.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 9

A number ending with 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 0 then it's cube ends with 1 , 8 , 7 , 4 , 5 , 6 , 3 , 2 , 0 respectively  

⇒ One's digit of 5832= 2
⇒ Cube of 2=23 = 8 

So, the one's digit of cube of 5832=8

Test: Cubes And Cube Roots- 1 - Question 10

Find the prime factorisation of 175616.

Detailed Solution for Test: Cubes And Cube Roots- 1 - Question 10

218 videos|139 docs|151 tests
Information about Test: Cubes And Cube Roots- 1 Page
In this test you can find the Exam questions for Test: Cubes And Cube Roots- 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Cubes And Cube Roots- 1, EduRev gives you an ample number of Online tests for practice

Top Courses for UPSC

218 videos|139 docs|151 tests
Download as PDF

Top Courses for UPSC