ATQ, we can say that Ratio of speeds of 'Amit' and 'Binod' is = m:(m - a) Ratio of speeds of 'Binod' and 'Chintu' = m:(m - b) So, ratio of speeds of 'Amit' and 'Chintu' = m2:(m - b) × (m - a) = m2: (m2- ma - mb + ab) So, distance covered by 'Chintu' in the time taken by 'Amit' to cover 'm' metres is = m - {m - (a +b) + (ab/m)} = [(a + b) - (ab/m)]
If all the digits of the number 6284593 are arranged in descending order from left to right, the position of how many digit /digits will remain unchanged?
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