Latest KVPY Aptitude Question SOLUTION: The ratio of the speed of sound to the average speed of an air molecule at 300 K and 1 atmospheric pressure is
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Calculus is the most powerful weapon of thought yet devised by the wit of man.
W. B. Smith
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?