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- Question
- What is the smallest number by which 3600 be divided to make it a perfect cube?
Options- A. 9
- B. 50
- C. 30
- D. 450
- Correct Answer
- 450
Explanation3600 = 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5.
To make it a perfect cube, the given number must be divided by 2 x 3 x 3 x 5 x 5 = 450 - 1. If ? 2401 = ? 7x then, the value of x is?
Options- A. 3
- B. 4
- C. 5
- D. 6 Discuss
- 2. If N = 11 9/ 16 then ? N =?
Options- A. 13/4
- B. 11/4
- C. 1.125
- D. None of these Discuss
- 3. If ? 256 / ? x = 2, then x is equal to?
Options- A. 64
- B. 128
- C. 512
- D. 1024 Discuss
- 4. The student of class XI of a school donated 4356 Rupees in all, for Prime Minister's National Relief Fund. Each student donated as many rupees as the number of students in the class. Find the number of students in the class.
Options- A. 65
- B. 60
- C. 66
- D. 70 Discuss
- 5. Find the least number by which 175760 be devided to make it a perfect cube.
Options- A. 10
- B. 20
- C. 100
- D. 5 Discuss
- 6. By what least number must 21600 be multiplied to make it a perfect cube?
Options- A. 6
- B. 10
- C. 30
- D. 60 Discuss
- 7. The sequence root of 0. 4 is
Options- A. 0.6
- B. 0.7
- C. 0.8
- D. 0.9 Discuss
- 8. Find the square root of 105 4/ 64.
Options- A. 151/4
- B. 1512/4
- C. 101/4
- D. 62/4 Discuss
- 9. ?1101/4 =?
Options- A. 19.5
- B. 10.25
- C. 10.5
- D. 11.5 Discuss
- 10. if ?x/169 = 18/13, then x is equal to
Options- A. 108
- B. 324
- C. 2916
- D. 4800 Discuss
Square Root and Cube Root problems
Search Results
Correct Answer: 4
Explanation:
?2401 = ?7x
? 7x = 2401 = 74
? x = 4
Correct Answer: 11/4
Explanation:
N = 25/16
? ?N = ?25/16
= 5/4
= 11/4
Correct Answer: 64
Explanation:
?256 / ?x = 2
? 16 = 2?x
? ?x = 8
? x = 64.
Correct Answer: 66
Explanation:
Total money donated = 4356 rupees
As total students are equal to the sum donated by each student.
Total Students =?4356
= 66
Correct Answer: 10
Explanation:
175760 = 24 x 5 x 13 3
= 23 x 2 x 5 x 133
To make perfect cube, it must be divided by 2 x 5 = 10
Correct Answer: 10
Explanation:
21600 = 6 x 6 x 6 x 10 x 10
To, make the given number a perfect cube, it must be multiplied by 10.
Correct Answer: 0.6
Explanation:
?0.4
= ?4/9
= 2/3 = 0.666
= 0.6
Correct Answer: 101/4
Explanation:
?1054/64
= ?6724/64
= 82/8 = 41/4 = 101/4
Correct Answer: 10.5
Explanation:
?1101/4
Multiply the denominator 4 with 100 and add the numerator 1.
= ?441 / 4
Simply the number in simple multiplication
= ?3 x 3 x 7 x 7 / 2 x 2
= 3 x 7/2 = 21/2
= 10.5
Correct Answer: 324
Explanation:
Given, ?x/169 = 18/13
On squaring both sides, we get
x/169 = 18/13 x 18/13
? x = 18 x 18 x 169/13 x 13
x = 18 x 18 = 324
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