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bmwhype2
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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 21 Nov 2007, 09:54
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x10x is a 4 digit integer divisible by 6. What is x?

2
3
4
5
6



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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 21 Nov 2007, 10:02
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C. 4
4104 is divisible by 6
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Ravshonbek
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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 21 Nov 2007, 10:03
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bmwhype2
x10x is a 4 digit integer divisible by 6. What is x?

2
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use divisibility rule by 6:
x10x has to be divided by 2 and 3

4104 is div. by 2
4104 sum of digits is div. by 3

so C
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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 21 Nov 2007, 10:05
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C.

The number must be divisible by 2 and 3. Therefore it must end in 2, 4, 6 or 8. Let this be x.

Sum of digits must be divisible by 3. Therefore 2x + 1 must be divisible by 3. Among 2, 4, 6, 8, only 4 satisifies this. The number is 4104.
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bmwhype2
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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 23 Nov 2007, 06:40
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good job guys.

OA is C.
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spider
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x10x is a 4 digit integer divisible by 6. What is x? 2 3 4 5 23 Nov 2007, 20:22
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bmwhype2
x10x is a 4 digit integer divisible by 6. What is x?

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later but ans = 4

sum = should be divisible by 3 and the number should be even.



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