CREATE TABLE table_203_175 (id NUMBER, "rank" CLOB, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

how many countries won at least 1 gold and 1 silver medal ?
SELECT COUNT("nation") FROM table_203_175 WHERE "gold" >= 1 AND "silver" >= 1
SELECT COUNT("nation") FROM "table_203_175" WHERE "gold" >= 1 AND "silver" >= 1