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Which of the following represent positive numbers?
I. −3 − (−5)
II. (− 3)(−5)
III. −5 − (−3)
A. I only
B. II only
C. III only
D. I and II
E. II and III
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I. −3 − (−5)
II. (− 3)(−5)
III. −5 − (−3)
A. I only
B. II only
C. III only
D. I and II
E. II and III
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Bunuel
I. −3 − (−5) = 2 (positive)
II. (− 3)(−5) = 15 (positive)
III. −5 − (−3) = -2 (negative)
Answer:
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Bunuel
Which of the following represent positive numbers?
I. −3 − (−5)
II. (− 3)(−5)
III. −5 − (−3)
A. I only
B. II only
C. III only
D. I and II
E. II and III
Solution:
To determine which expression is positive, we analyze Roman numerals, I, II, and III.
I. −3 − (−5)
−3 − (−5) = - 3 + 5 = 2
I is positive.
II. (− 3)(−5)
(− 3)(−5) = 15
II is positive.
III. −5 − (−3)
−5 − (−3) = -5 + 3 = -2
III is NOT positive.
Thus, Roman numerals I and II are positive.
Answer: D
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Which of the following represent positive numbers?
I. −3 − (−5)
II. (−3)(−5)
III. −5 − (−3)
(A) I only
(B) II only
(C) III only
(D) I and II
(E) II and III
_________________
I. −3 − (−5)
II. (−3)(−5)
III. −5 − (−3)
(A) I only
(B) II only
(C) III only
(D) I and II
(E) II and III
_________________
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Which of the following represent positive numbers?
I. −3 − (−5) = -3 + 5 = 2
II. (−3)(−5) = 15
III. −5 − (−3) = -5 + 3 = -2
Option D(I and II) are the positive numbers.
I. −3 − (−5) = -3 + 5 = 2
II. (−3)(−5) = 15
III. −5 − (−3) = -5 + 3 = -2
Option D(I and II) are the positive numbers.
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Posts: 125
1) -3+5=+2
2) (-3)(-5)=+15
3) -5+3=-2
Answer D
2) (-3)(-5)=+15
3) -5+3=-2
Answer D
Posts: 22
Note: Multiplication of two negative number is positive.
I. −3 − (−5) = 2 (positive)
II. (− 3)(−5) = 15 (positive)
III. −5 − (−3) = -2 (negative)
From above we can see that I and II both are positive.
answer: D
I. −3 − (−5) = 2 (positive)
II. (− 3)(−5) = 15 (positive)
III. −5 − (−3) = -2 (negative)
From above we can see that I and II both are positive.
answer: D
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GMAT 1: 600 Q46 V27
GMAT 1: 600 Q46 V27
Posts: 1,124
I. −3 − (−5) = 2 (positive)
II. (− 3)(−5) = 15 (positive)
III. −5 − (−3) = -2 (negative)
Hence D.
II. (− 3)(−5) = 15 (positive)
III. −5 − (−3) = -2 (negative)
Hence D.
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Bunuel
Asked: Which of the following represent positive numbers?
I. −3 − (−5)
-3+5=2
II. (− 3)(−5)
15
III. −5 − (−3)
-5+3=-2
IMO D
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Posts: 1,387
I. −3 − (−5) = -3 + 5 = 2, eliminate B, C and E
II. (− 3)(−5) = 15 D is the answer, no need to calculate III
III. −5 − (−3)
II. (− 3)(−5) = 15 D is the answer, no need to calculate III
III. −5 − (−3)
Bunuel
GMAT 1: 750 Q49 V42
Posts: 469
I) -3 - (-5) --> -3 + 5 --> 2
So, Roman numeral I is a positive number, which means we can eliminate answer choices that don't contain I, which means we get rid of B, C, and E. Since the remaining answer choice D doesn't contain Roman numeral III, we don't have to check it, and therefore only check Roman numeral II next:
II) (-3)(-5) --> 15
Since Roman numeral II is also a positive number, the answer is D.
So, Roman numeral I is a positive number, which means we can eliminate answer choices that don't contain I, which means we get rid of B, C, and E. Since the remaining answer choice D doesn't contain Roman numeral III, we don't have to check it, and therefore only check Roman numeral II next:
II) (-3)(-5) --> 15
Since Roman numeral II is also a positive number, the answer is D.
Bunuel
GMAT Focus 1: 555 Q81 V78 DI74
Posts: 501
Apply the number property
In 1 -ve×-ve=+ve and also magnitude of 5 is bigger and sign chances to positive after opening the bracket,hence positive.
In 2 -ve×-ve=+ve
In 3 -ve×-ve=+ve sign chances to positive after opening the bracket,however the magnitude of 5 is bigger than 3,hence negative.
In 1 -ve×-ve=+ve and also magnitude of 5 is bigger and sign chances to positive after opening the bracket,hence positive.
In 2 -ve×-ve=+ve
In 3 -ve×-ve=+ve sign chances to positive after opening the bracket,however the magnitude of 5 is bigger than 3,hence negative.
Bunuel
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