Question

$36\times \left(18\times 19\right)=\left(36\times \_\_\_\right)\times 19$

Answer 1

For find $36\times \left(18\times 19\right)=\left(36\times \_\_\_\right)\times 19$:
Concept used: commutative property states that if two or more whole numbers are multiplied , then the change in order of numbers does not change the result.
$a\times \left(b\times c\right)=\left(a\times b\right)\times c$
Therefore, $36\times \left(18\times 19\right)=\left(36\times 18\right)\times 19$
Hence $18$ is the required solution.