Square Root and Cube Root problems
- 1. ? 288 / ? 128
Options- A. ?3/2
- B. 3/?2
- C. 3/2
- D. ?3/2 Discuss
Correct Answer: 3/2
Explanation:
?288 / ?128 = ?9/4
= 3/2
- 2. ? 10 x ? 15?
Options- A. 5?6
- B. 6?5
- C. 5
- D. ?30 Discuss
Correct Answer: 5?6
Explanation:
?10 x ?15
= ?10 x 15
= ?150
= ?25 x 6
= ?25 x ?6
= 5?6
- 3. What value should come in place of the question mark(?) in the following question?
√ ? / 200 = 0.02?
Options- A. 0.4
- B. 4
- C. 16
- D. 1.6 Discuss
Correct Answer: 16
Explanation:
Let √x / 200 = 0.02
Then, √x = 200 x 0.02 = 4.
So, x = 16
- 4. What value should come in place of the question mark(?) in the following question?
250 / √ ? = 10
Options- A. 25
- B. 250
- C. 625
- D. 2500 Discuss
Correct Answer: 25
Explanation:
Let 250 / √x = 10.
Then √x= 250 / 10 = 25
∴ x = 625
- 5. What value should come in place of the question mark(?) in the following question?
√ 4375 / √ 7 =?
Options- A. 24.75
- B. 27.25
- C. 25
- D. 35 Discuss
Correct Answer: 25
Explanation:
√4375 / √7 = √4375 / 7
= √625
= 25
- 6. ? 4/3 - ? 3/4 =?
Options- A. 1/2?3
- B. - 1/2?3
- C. 1
- D. 2?3 Discuss
Correct Answer: 1/2?3
Explanation:
?4/?3 - ?3/?4
= 2/?3 - ?3/2
= (4 - 3)/2?3
= 1/2?3
- 7. If ? 2 = 1.4142, then the approximate value of 1/? 2/9 is?
Options- A. 0.2321
- B. 0.4714
- C. 0.3174
- D. 0.4174 Discuss
Correct Answer: 0.4714
Explanation:
?2/9
= ?2/?9
= ?2/3
= 1.4142/3
? 1/?2/9 = 0.4714
- 8. If ? 3 = 1.732, then the approximate value of 1/?3 is?
Options- A. 0.617
- B. 0.313
- C. 0.577
- D. 0.173 Discuss
Correct Answer: 0.577
Explanation:
1/?3 = 1/?3 x (?3 / ?3)
= ?3/3
= 1.732 / 3
= 0.577
- 9. If ? 24 = 4.899, then the value of ? 8/3 is?
Options- A. 0.544
- B. 2.666
- C. 1.633
- D. 1.333 Discuss
Correct Answer: 1.633
Explanation:
?8/3 =?24/9
= ?24/3
= 4.899/3
=1.633
- 10. What value should come in place of the question mark(?) in the following question?
? / √ 2.25 = 550
Options- A. 825
- B. 82.5
- C. 3666.66
- D. 2 Discuss
Correct Answer: 825
Explanation:
Let N / √2.25 = 550.
Then, N / 1.5 = 550
∴ N = (550 x 1.5)
= (550 x 15) /10
= 825
More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.