3 Bones in the Inner Ear : malleus (hammer), incus (anvil), and stapes (stirrup).
b b b
3 Holes in a Bowling Ball
3 Point Basket
3 Way Light Bulb
3 Rounds in Boxing (Olympic Boxing Match)
The ditloid 7 equals B for S B (7 = B for S B) means:7 = Brides for Seven Brothers
3 Primary Colours - Blue, Red, and Yellow
a perfect game in bowling
7
290 Bones in a Child's Body
3 Billy Goats Gruff and the Ugly Troll
2 covers on a book