Question

hollow meaning in maths

Answer 1

$\huge\mathfrak\color{red}hello$

$\underline{\underline{\huge\mathfrak{thanks......... }}}$

Hollow

with a hole or empty space inside

$\huge\mathfrak\color{red}hello$

$\underline{\underline{\huge\mathfrak{thanks......... }}}$

Answer 2

hollow meaning concave