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25 Apr 2017, 06:21
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Difficulty:
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75% (01:29) correct
25%
(01:39)
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If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
25 Apr 2017, 06:29
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vikasp99
If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
5@/4@ = (1/1)(1/2)(1/3)(1/4)(1/5)/(1/1)(1/2)(1/3)(1/4)
= 1/5
Answer:
Cheers,
Brent
01 May 2017, 08:27
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vikasp99
If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
A. 1/5
B. 4/5
C. 1
D. 5/4
E. 5
5@/4@ = (1/1)(1/2)(1/3)(1/4)(1/5)/(1/1)(1/2)(1/3)(1/4)
= 1/5
Answer:
Cheers,
Brent
**Hi, It said S can be less than or equal to K, so for @5 the value of S could be 1,2,3,4 or 5 and for @4 the value of S could be 1,2,3,4...so while calculating @5/@4 with value of S as 4 for @5 and similarly S=4 for @4 the answer would be 1...So there is lots of ambiguity in this question.
