Sentence Examples


  • The parts of the flower are most frequently arranged in fives, or multiples of fives; for instance, a common arrangement is as follows, - five sepals, succeeded by five petals, ten stamens in two sets of five, and five or fewer carpels; an arrangement in fours is less frequent, while the arrangement in threes, so common in monocotyledons, is rare in dicotyledons.
  • The whole theory of the inflections of a cubic curve is discussed in a very interesting manner by means of the canonical form of the equation x +y +z +6lxyz= o; and in particular a proof is given of Plucker's theorem that the nine points of inflection of a cubic curve lie by threes in twelve lines.
  • Later I said, "Make fifteen threes and count."
  • I wished her to make the groups of threes and supposed she would then have to count them in order to know what number fifteen threes would make.
  • But instantly she spelled the answer: "Fifteen threes make forty-five."

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