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ERIC Number: EJ200112
Record Type: Journal
Publication Date: 1978-Dec
Pages: N/A
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
Happy Numbers, Sad Numbers.
Jeffery, Bob
Mathematics Teaching, n85 p4-7 Dec 1978
This investigation concerns the repeated application of the rule "take the sum of the squares of the digits." (MP)
Publication Type: Journal Articles
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A