0 votes 0 votes Show that there are at least six people in California (population: $37$ million) with the same three initials who were born on the same day of the year (but not necessarily in the same year). Assume that everyone has three initials. Combinatory kenneth-rosen discrete-mathematics counting pigeonhole-principle descriptive + – admin asked Apr 29, 2020 admin 192 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.