Question: Which 1982 number-one single by Paul McCartney and Stevie Wonder was released on 29 March where Ruth Brewer Eisenberg and Margaret Patrick were the duos?
Sentence (from "Ruth Brewer Eisenberg"): Ruth Brewer Eisenberg (1902–1996) was "Ivory" of "Ebony and Ivory," the inter-racial piano duo.
Relevant evidence: Yes