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Practice Quiz or MCQ (Multiple Choice Questions) with solution are available for Practice, which would help you prepare for "Square Root and Cube Root" under Logical Reasoning and Data Interpretative. You can practice these practice quizzes as per your speed and improvise the topic. The same topic is covered under various competitive examinations like - CAT, GMAT, Bank PO, SSC and other competitive examinations.Q.
- a)24
- b)12
- c)48
- d)36
Correct answer is 'A'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solution are available for Practice, which would help you prepare for "Square Root and Cube Root" under Logical Reasoning and Data Interpretative. You can practice these practice quizzes as per your speed and improvise the topic. The same topic is covered under various competitive examinations like - CAT, GMAT, Bank PO, SSC and other competitive examinations.
Q.
a)
24
b)
12
c)
48
d)
36
|
Shalini Kumar answered |
⇒ x2 = √331776
⇒ x2 = 576
⇒ x = √576
⇒ x = 24
What is the least perfect square which is divisible by each of 21, 36 and 66?- a)213444
- b)214434
- c)214344
- d)231444
Correct answer is option 'A'. Can you explain this answer?
What is the least perfect square which is divisible by each of 21, 36 and 66?
a)
213444
b)
214434
c)
214344
d)
231444
|
Ishani Rane answered |
L.C.M. of 21, 36, 66 = 2772
Now, 2772 = 2 * 2 * 3 * 3 * 7 * 11
To make it a perfect square, it must be multiplied by 7 x 11.
So, required number = 2 * 2 * 3 * 3 * 7 * 7 * 11 * 11 = 213444
- a)0.85
- b)0.72
- c)2.8
- d)0.4
Correct answer is option 'A'. Can you explain this answer?
a)
0.85
b)
0.72
c)
2.8
d)
0.4
|
Shalini Patel answered |
= (12/11) x (11/15) x (15/14)
= 12/14
= 0.85
is:
- a)13.41
- b)20.46
- c)21.66
- d)22.35
Correct answer is option 'D'. Can you explain this answer?
a)
13.41
b)
20.46
c)
21.66
d)
22.35
|
The Bold answered |
3√5 + √125 = (3√5)+(√5×5×5) = (3√5)+(5√5)=8√5 =17.88
√80+6√5=(√5×2×2×2×2) + (6√5)
=4√5 + 6√5
=10√5
we know , √5=2.236
10√5=(10×2.236)=22.36 (approximately)
or
10√5=(8√5+2√5)=17.88+(2×2.236)=17.35(approximately)
so the ans is D.
√80+6√5=(√5×2×2×2×2) + (6√5)
=4√5 + 6√5
=10√5
we know , √5=2.236
10√5=(10×2.236)=22.36 (approximately)
or
10√5=(8√5+2√5)=17.88+(2×2.236)=17.35(approximately)
so the ans is D.
- a)2.24
- b)1.24
- c)1.34
- d)2.34
Correct answer is option 'D'. Can you explain this answer?
a)
2.24
b)
1.24
c)
1.34
d)
2.34
|
Vikas Kapoor answered |
(5.4756)1/2 = 2.34
The square root of 16641 is- a)129
- b)121
- c)211
- d)229
Correct answer is option 'A'. Can you explain this answer?
The square root of 16641 is
a)
129
b)
121
c)
211
d)
229
|
Nikita Singh answered |
Step 1:
- We now need to obtain the digital root of the number. Here's how you do it:
- Split the number up and add each digit together:
1 + 6 + 6 + 4 + 1 = 18 - If the answer is more than one digit, you would add each digit of the answer together again:
1 + 8 = 9 - What is the digital root of number 16,641?
Answer: 9
Step 2:
- So now we know the digital root of 16,641 is 9. Is 9 in the list of digital roots that are always a square root (1, 4, 7 or 9)?
- Answer: YES, 9 is in the list of digital roots that are always perfect squares. We can conclude that 16,641 could be a perfect square!
Factoring
- OK, so now we know that 16,641 could be a perfect square. We have to find the factors of the number to be sure.
- Here are all of the factors of 16,641:
(1 x 16,641) (3 x 5,547) (9 x 1,849) (43 x 387) (129 x 129)
Hence the answer is 129.
- a)10
- b)1
- c)0.1
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
a)
10
b)
1
c)
0.1
d)
None of these
|
Avinash Sharma answered |
Squaring both side,
⇒ 0.0576 x a = 0.0576
⇒ a = 1
Can you explain the answer of this question below:
- A:
- B:
7/36
- C:
36/7
- D:
The answer is c.
7/36
36/7
|
Meera Rana answered |
► Using identity, (a-b)2 = a2 + b2 - 2ab
► Here a = √7 and b = 1/√7
= (√7)2 + (1/√7)2 - 2. √7.1/√7
= 7 + 1/7 - 2
= 5 + 1/7
= 36/7
The least perfect square, which is divisible by each of 21, 36 and 66 is:- a)213444
- b)214344
- c)214434
- d)231444
Correct answer is option 'A'. Can you explain this answer?
The least perfect square, which is divisible by each of 21, 36 and 66 is:
a)
213444
b)
214344
c)
214434
d)
231444
|
|
Ishani Rane answered |
L.C.M of 21,36,66=2772
Now, 2772=2*2*3*3*7*11
Hence to make it a perfect square , it must be multiplied by 7*11
∴ The required number is 2^2*3^3*7^2*11^2
= 213444
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for "Square Root and Cube Root" under Quantitative Aptitude. You can practice these practice quizzes as per your speed and improvise the topic. The same topic is covered under various competitive examinations like - CAT, GMAT, Bank PO, SSC and other competitive examinations. Q. The cube root of .000216 is:- a)0.6
- b)0.06
- c)77
- d)87
Correct answer is option 'B'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for "Square Root and Cube Root" under Quantitative Aptitude. You can practice these practice quizzes as per your speed and improvise the topic. The same topic is covered under various competitive examinations like - CAT, GMAT, Bank PO, SSC and other competitive examinations.
Q. The cube root of .000216 is:
a)
0.6
b)
0.06
c)
77
d)
87
|
|
Ishani Rane answered |
then the value of (x2 + y2) is:
- a)10
- b)13
- c)14
- d)15
Correct answer is option 'C'. Can you explain this answer?
then the value of (x2 + y2) is:a)
10
b)
13
c)
14
d)
15
|
|
Nishtha Ahuja answered |
a2 + b2 = 2(a2 + b2 )
- a)0.1
- b)10
- c)10000
- d)1000
Correct answer is 'C'. Can you explain this answer?
a)
0.1
b)
10
c)
10000
d)
1000
|
Janhavi Yadav answered |
Squaring both side,
⇒ 0.000256 x a = 2.56
⇒ a = 2.56/0.000256
⇒ a = 10000
Chapter doubts & questions for Number System - IBPS PO Prelims & Mains Preparation 2024 is part of Bank Exams exam preparation. The chapters have been prepared according to the Bank Exams exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Bank Exams 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Number System - IBPS PO Prelims & Mains Preparation in English & Hindi are available as part of Bank Exams exam.
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