1. Total number of ways of selecting four shoes (in order Ist, IInd, IIIrd, IVth) is 20 × 19 × 18 × 17

Of course, this sent a tsunami of duping delight gushing through my veins.

And I decided, rightly or wrongly, not to tell her about the pregnancy.

1990: Cuisinart stuck a human eyelash to his clypeus with saliva, twisted it into a handlebar mustache, and greeted citizens as they arrived at the rim of the sink. — Daniel Evan Weiss, The Roaches Have No King (Serpent's Tail 2001, p.16)