Test: Square Root And Cube Root- 1


10 Questions MCQ Test UPSC Prelims Paper 2 CSAT - Quant, Verbal & Decision Making | Test: Square Root And Cube Root- 1


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Attempt Test: Square Root And Cube Root- 1 | 10 questions in 20 minutes | Mock test for Quant preparation | Free important questions MCQ to study UPSC Prelims Paper 2 CSAT - Quant, Verbal & Decision Making for Quant Exam | Download free PDF with solutions
QUESTION: 1

 find the value of x.

Solution:



QUESTION: 2

Solution:

QUESTION: 3

 then what will be the value of 

Solution:


QUESTION: 4

The cube root of 0.000729 is

Solution:

QUESTION: 5

What is the least perfect square which is divisible by each of 21, 36 and 66?

Solution:

LCM of 21, 36, 66 = 2772
i.e., all multiples of 2772 are divisible by 21, 36 and 66
Prime factorization of 2772 is,
2772 = 2 × 2 × 3 × 3 × 7 × 11
i.e., to make it a perfect square, we have to multiply it by 7 and 11
Hence, required number = 2772 × 7 × 11 = 213444

QUESTION: 6

Solution:

QUESTION: 7

 

Solution:

The correct option is Option C.

  (√7 - 1/√7)² 

= (√7)² - 2 × √7 × 1/√7 + (1/√7)²

= 7 - 2 + 1/7

= 5 + 1/7 

= 36/7

QUESTION: 8

The square root of 16641 is

Solution:

QUESTION: 9

Solution:

QUESTION: 10

Solution:

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