noun
inequality sign; less-than or greater-than sign
Mathematical symbol for inequality, such as <, >, ≤, ≥, or ≠. Contrasts with 等号 (equals sign).
See also: 等号
不等号を使って式の大小関係を表す。
Use inequality signs to express the magnitude relationship of expressions.
In this problem, pay attention to the direction of the inequality sign.