階かい数すう

noun

number of floors; number of stairs

Refers to the count of floors in a building or the number of steps in a staircase. Common in architectural or everyday contexts.

• このビルの階かい数すうは何なん階がいですか。

  How many floors does this building have?

• 階かい段だんの階かい数すうを数かぞえてみた。

  I tried counting the number of stairs.

noun

rank; order

Mathematical term for the order or rank of a matrix, tensor, or similar structure. Not used for social rank.

• 行ぎょう列れつの階かい数すうを求もとめる。

  Find the rank of the matrix.