二项式系数 èr xiàng shì xì shù

DEFINITIONS

  1. a binomial coefficient (math.)
  2. the number of combinations

CHARACTERS

二 èr
HSK 1
two; twice
项 xiàng
HSK 5
neck, nape of neck; sum; funds
式 shì
HSK 4
style, system, formula, rule
系 xì
HSK 1
system; line, link, connection
数 shù
HSK 3
number; several, count; fate