Stephan hawking a well known scientist. In spite of his disability he is doing to many research about black hole. here is a video of him.please click the lin below. if this does not work copy and paste on your browser to watch video of him.video here
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If k +10, is GM of k + 2 and 9 ( k + 2) find value of k If 5 is arithmetic mean between b and 8, find the geometric mean between them. The geometric mean of X and 27 is 9, what is their arithmetic mean
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