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08 Sep 2021, 04:44
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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83% (00:56) correct
17%
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If \(65x = 3^2*5^2*13\), which of the following is not a factor of integer x?
A. 3
B. 5
C. 9
D. 13
E. 15
A. 3
B. 5
C. 9
D. 13
E. 15
Ritik0987654
Joined: 10 Feb 2021
Last visit: 12 Dec 2024
Posts: 6
Given Kudos: 582
Location: India
Schools: Broad Wharton '27
08 Sep 2021, 05:23
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Ans: (d) 13.
65x = (3²)*(5²)*(13)
= (5*13) (3²*5)
= 65 (3²*5)
Now,
3²*5 = (3*3*5)
The factors of 3²*5 are 3,5 and 9.
Based on the options given, 13 is not a factor of the given expression.
Posted from my mobile device
65x = (3²)*(5²)*(13)
= (5*13) (3²*5)
= 65 (3²*5)
Now,
3²*5 = (3*3*5)
The factors of 3²*5 are 3,5 and 9.
Based on the options given, 13 is not a factor of the given expression.
Posted from my mobile device
08 Sep 2021, 11:02
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5*13*x = 3^2*5^2*13
=> x = 3^2*5
=> 3, 5, 9, 15 are factors of x
Out of the given options, 13 is not the factor of x
OA should be D
=> x = 3^2*5
=> 3, 5, 9, 15 are factors of x
Out of the given options, 13 is not the factor of x
OA should be D
