Reviews

User reviews

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it is a nice book with 1000 techniques and by using all of them we could surely be a human calculator

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hftht

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a very good book 4 maths

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Really helpful book

All reviews - 4
4 stars - 0
3 stars - 0
2 stars - 0
1 star - 0

All reviews - 4
Editorial reviews - 0

All reviews - 4