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12 Jan 2017, 08:35
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
41% (01:43) correct
59%
(01:08)
wrong
based on 90
sessions
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Not Attempted Yet
Is non-negative integer x an even integer?
1)x<k, where k is the number of digits in x.
2)k=1
Self made
1)x<k, where k is the number of digits in x.
2)k=1
Self made
Vaidya
Joined: 02 Oct 2016
Last visit: 10 Sep 2025
Posts: 32
Given Kudos: 20
Location: India
Schools: HEC Dec '17 (D) IE (A) INSEAD Jan'23 intake
GMAT 1: 740 Q49 V42
12 Jan 2017, 08:43
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chetan2u
Given: x>= 0 and x is an integer.
From 1) If k is the number of digits in x and x < k, k must be equal to 1
(Eg: If k = 2, then x is a 2 digit number => no 2 digit number can be less than 2)
=> k = 1 and x = 0
=> 0 is even. Answer is YES.
Sufficient.
From 2) k = 1
We don't know the relationship between x and k. Hence, not sufficient.
Answer is A.
From 1) If k is the number of digits in x and x < k, k must be equal to 1
(Eg: If k = 2, then x is a 2 digit number => no 2 digit number can be less than 2)
=> k = 1 and x = 0
=> 0 is even. Answer is YES.
Sufficient.
From 2) k = 1
We don't know the relationship between x and k. Hence, not sufficient.
Answer is A.
12 Jan 2017, 09:33
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Vaidya
Thank you for the reply Vaidya. Just one note, it's not necessary to put your solution in spoiler.
