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13 May 2021, 19:00
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B
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Difficulty:
35%
(medium)
Question Stats:
64% (01:13) correct
36%
(01:01)
wrong
based on 72
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Set Q contains n non-zero numbers. Does set Q contain an even number of negative numbers?
(1) n is even.
(2) The product of all the numbers in Q is 100,000
(1) n is even.
(2) The product of all the numbers in Q is 100,000
22 May 2021, 04:15
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Bunuel
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Hope this helps.
General Discussion
13 May 2021, 20:23
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Set Q contains n non-zero numbers. Does set Q contain an even number of negative numbers?
(1) n is even.
Doesn’t tell anything about how many of these are negative integers.
(2) The product of all the numbers in Q is 100,000
As the product is positive, the number of negative integers have to be even.
It could be 0, 2, 100 or 700 and so on. But in each case it has to be even number of negative integers.
Sufficient
B
(1) n is even.
Doesn’t tell anything about how many of these are negative integers.
(2) The product of all the numbers in Q is 100,000
As the product is positive, the number of negative integers have to be even.
It could be 0, 2, 100 or 700 and so on. But in each case it has to be even number of negative integers.
Sufficient
B
