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Question
A student was asked to simplify the expression: `(0.1216 xx 0.105 xx 0.0002)/(0.625 xx 0.08512 xx 0.039 xx 0.16)` his answer was `1/65.` What is the difference between his answer and the correct answer?
Options
`1/65`
`1/130`
`1/26`
`1/13`
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Solution
`1/130`
Explanation:
`(0.1216 xx 0.105 xx 0.0002)/(0.625 xx 0.08512 xx 0.039 xx 0.16)=1/130`
∴ Required difference`=1/65-1/130=1/130`
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