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The product of n consecutive integers equals P. Which of the
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19 Oct 2017, 01:21
19 Oct 2017, 01:21
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The product of n consecutive integers equals P. Which of the following is true for n >= 2?
I. P is an even number
II. P is an odd number
III. P is positive
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) II and III only
Kudos for correct solution.
I. P is an even number
II. P is an odd number
III. P is positive
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) II and III only
Kudos for correct solution.
Re: The product of n consecutive integers equals P. Which of the
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19 Oct 2017, 01:33
19 Oct 2017, 01:33
1
In this kind of questions it is enough to find a counterexample to exclude an answer choice.
I. P is an even number
II. P is an odd number -> 2*3 = 6, they are consecutive numbers but their product is even
III. P is positive -> -3*-2*-1 = -6, they are consecutive numbers and their product is negative
Thus, since at least one answer must be true, the only right statement is I. Answer A
I. P is an even number
II. P is an odd number -> 2*3 = 6, they are consecutive numbers but their product is even
III. P is positive -> -3*-2*-1 = -6, they are consecutive numbers and their product is negative
Thus, since at least one answer must be true, the only right statement is I. Answer A
Re: The product of n consecutive integers equals P. Which of the
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11 May 2018, 07:14
11 May 2018, 07:14
IlCreatore wrote:
In this kind of questions it is enough to find a counterexample to exclude an answer choice.
I. P is an even number
II. P is an odd number -> 2*3 = 6, they are consecutive numbers but their product is even
III. P is positive -> -3*-2*-1 = -6, they are consecutive numbers and their product is negative
Thus, since at least one answer must be true, the only right statement is I. Answer A
I. P is an even number
II. P is an odd number -> 2*3 = 6, they are consecutive numbers but their product is even
III. P is positive -> -3*-2*-1 = -6, they are consecutive numbers and their product is negative
Thus, since at least one answer must be true, the only right statement is I. Answer A
But the question says that the N is greater than equal to 2 which insuniates that n is positive ..so dont you think than the product will be positive too because it is given that N is positive.
For sure option I is correct too because 2 is even and even multipled by n+1-- will be even also.
Please clarify.
