Question

find the cube number that is greater than 20 but smaller than 100

Answer 1

$3 {}^{3} = 27 \\ 4 {}^{3} = 64$
there are two such nos.

Answer 2

${3}^{3} = 27 \\ 20 < 27 < 100 \\ \\ \\ {4}^{3} = 64 \\20 < 64 < 100$