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?
Ruth Brewer Eisenberg: Ruth Brewer Eisenberg (1902–1996) was "Ivory" of "Ebony and Ivory," the inter-racial piano duo. Ruth Brewer Eisenberg:  Eisenberg and Margaret Patrick, "Ebony," each had a stroke in 1982, which partially disabled them. Ebony and Ivory: "Ebony and Ivory" is a 1982 number-one single by Paul McCartney and Stevie Wonder. Ebony and Ivory:  It was released on March 29 of that year.
Ebony and Ivory