CREATE TABLE table_204_878 (id DECIMAL, "model" TEXT, "release date" TEXT, "sensor\ res. ,  size" TEXT, "lens  ( 35 mm equiv. ) \ zoom ,  aperture" TEXT, "screen\ size ,  pixels" TEXT, "dimensions\ w  ( mm )  \\u00d7 h  ( mm )  \\u00d7 d  ( mm ) " TEXT, "weight" TEXT, "features" TEXT)

how many models weighed between 100 and 200 grams ?
SELECT COUNT("model") FROM table_204_878 WHERE "weight" >= 100 AND "weight" <= 200
SELECT COUNT("model") FROM "table_204_878" WHERE "weight" <= 200 AND "weight" >= 100