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ISBN-13: 9789814304047, 978-9814304047. Occasionally, by making wild conjectures, creative solutions can transpire. However, hypotheses need to be well-tested. With practice, they will be able to solve more problems than they could previously imagine.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.