Question

find the value of x
$\sqrt[?3]{?512 \sqrt[3]{3.375?} }$
options

1. 12
2. 18
3. 21
4. 26

​

Answer 1

Answer:

12

Step-by-step explanation:

as cube root of 3.375 is 1.5

So,

1.5 x 512 x ? = cube root

After prime factorization we see that 2 , 2 and 3 are the only ones without pairs.i.e the answer is 2 x 2 x 3=12