Tis known in refined company, that choosing K things out of
N can be done in ways as many as choosing N minus K from N:
I pick K, you the remaining.
This simply states the binomial coefficient identity .
Find though a cooler bijection, where you show a knack
uncanny, of making your choices contain all K of mine.For
pedantry let K be no more than half N.
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A seller has a set of apples out of which he sells one half of it and half an apple to his first customer.then he sells half of the remaining apples and a half apple to his second customer.Then he sells half of the remaining apple and ? apple to his third customer and so on.This repeats upto 7th customer and no more apples are remaining . Find the total no of apples he had.
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Plz explain with steps.. What s de answer for this question : Three independent mechanisms A, B and C have been incorporated for power saving in a plant producing respectively 30%, 40% and 10% efficiency. Assuming that they operate independently, what is the net power efficiency achieved. (a) 62.2% (b) 68% (c) 61% (d) 64% (e) 56% ans 61..
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