Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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At family gathering were the following people:one grandfather, one grandmother,two father's,two mother's,four children,three grandchildren,one brother,two sisters,two sons ,two daughters ,one father-in law,one mother in law,one daughter in law.but not as many people attended as it sounds.how many were there,and who were they?
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