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ram
Joined: 07 Oct 2007 Posts: 7
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Posted: Sun Oct 14, 2007 4:14 pm Post subject: Is '0' an even number? |
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Had a problem with a DS question.
The explanatory answer considered zero as an even number? Is it an even number. I remember learning at school that zero is neither even nor odd. |
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ag
Joined: 07 Oct 2007 Posts: 6
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Posted: Mon Oct 15, 2007 5:08 pm Post subject: |
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I think so too.
Remember having learnt in the distant past that zero is neither odd nor even.
BTW can you post the question in which it appeared. |
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ram
Joined: 07 Oct 2007 Posts: 7
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Posted: Sat Oct 20, 2007 9:07 am Post subject: here is the DS question |
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What is the sum of 4A7 and 5B2, where A and B take values from 0 to 9?
A. A is an even number
B. The sum of A and B is a multiple of 9.
The Correct Answer given is choice (5) - i.e., the answer cannot be determined from the information provided in the two statements. |
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ag
Joined: 07 Oct 2007 Posts: 6
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Posted: Sat Oct 27, 2007 12:14 pm Post subject: how does knowing '0' as an even number change things |
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I seem to miss the point somewhere.
pls let me know why it matters if zero is odd or even to solve this question? |
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sree
Joined: 05 Nov 2007 Posts: 2 Location: India
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Posted: Mon Nov 05, 2007 6:20 pm Post subject: |
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Zero is odd or even should not matter for this question.
The only value for A and B that will satisfy both the statements is that A takes 6 and B takes 3.
Choice (3) should be correct IMO. |
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2iim Forum Moderator
Joined: 10 Oct 2007 Posts: 8
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Posted: Wed Nov 07, 2007 8:18 am Post subject: The correct answer is choice (5) |
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One of the values that satisfy both the statements is what sree had mentioned
i.e, the value of A is '6' and that of B is '3'. So, it satisfies both the condition and the sum is 9.
But there is another set of values that satisfy both the statements
the value of A being '0' (ZERO IS AN EVEN NUMBER and this is where it matters whether zero is odd or even ) and B taking the value '0'. In this case, the sum A + B will be '0' which is a multiple of 9.
So, we get two values for the sum of A + B viz., 9 or 0.
hence, the information provided in both the statements is not sufficient and the correct answer is choice (5). |
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