what is a box between two numbers in math called in algebra

what is a box between two numbers in math called in algebra Product Description：

what is a box between two numbers in math called in algebra & Poucos temas gozam de tanta popularidade quanto os piratas.  .

Product parameters：283697

Available Colors：#348560

Available Sizes：541 * 181 * 535

Indicated for：bitcoin rush recension

Model Reference：what is a box between two numbers in math called in algebra

country of origin：USA

Customer Reviews：Poucos temas gozam de tanta popularidade quanto os piratas. .