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# A certain calculator is able to display at most 10 digits,

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A certain calculator is able to display at most 10 digits, [#permalink]  24 Jul 2011, 14:35
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45% (01:51) correct 54% (00:51) wrong based on 11 sessions
A certain calculator is able to display at most 10 digits, so that any number with a total of more than 10 digits before and after the decimal point cannot be displayed accurately. If x and y are positive integers less than 1,000, can the result of dividing x by y be displayed accurately on the calculator?

(1) 105 < x < 108

(2) 3 < y < 6
[Reveal] Spoiler: OA

Last edited by Bunuel on 11 Jul 2013, 01:17, edited 1 time in total.
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Re: DS - 700 level - calculator [#permalink]  24 Jul 2011, 15:06
i think B.

statement 2 can have values either 4 or 5... which should generate a terminating decimal, whatever the value of x may be. so sufficient..

statement 1 can have values such as 106, 107... 107 when divided by 3.. will not generate a terminating #. whereas 106 when divided by 2 will generate a terminating #. so not sufficient.
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Re: DS - 700 level - calculator [#permalink]  24 Jul 2011, 21:15
A certain calculator is able to display at most 10 digits, so that any number with a total of more than 10 digits before and after the decimal point cannot be displayed accurately. If x and y are positive integers less than 1,000, can the result of dividing x by y be displayed accurately on the calculator?

(1) 105 < x < 108

(2) 3 < y < 6

From Stmt 1: if x = 106 and y = 2 then x/y can be displayed accurately
However, if x = 106 and y = 3 then x/y cannot be displayed accurately

From Stmt 2: possible value of y = 4 and 5. Any number divided by either 4 or 5 will be either an integer or a terminating decimal series. Hence suff. B
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Re: DS - 700 level - calculator [#permalink]  24 Jul 2011, 21:18
Yes, B seems straight-forward
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Re: DS - 700 level - calculator   [#permalink] 24 Jul 2011, 21:18
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