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Multiple Choice Question with Only One Choice Correct
A body goes from A to B with a velocity of 40 kmh^-1 and returns from B to A with a velocity of 60 kmh^-1. What is the average velocity of the body during the whole journey?

(a)	50 kmh ^-1	(b)	45 kmh ^-1
(c)	55 kmh ^-1	(d)	zero

Chemistry

True or False :
The stoichiometry of a reaction tells nothing about the order of the reaction unless it is an elementary step.

Mathematics

Find the number of outcomes when 10 identical cubical dice are thrown.

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