Question

To get $512$, the number of times $64$ be added to itself is .

• A. $6$
• B. $8$
• C. $12$

Answer 1

The correct option is B $8$

Suppose the $64$ should be added to itself $x$ times to get $512$.

$⟹64+64+64+......x\text{times}=512$
$⟹x\times 64=512$
$⟹x=512÷64=8$, as can be seen in below picture,


Therefore, $64$ should be added $8$ to itself to get $512.$