Question

Using suitable identities, find the value of ${102}^3$.

• A. 1061208

Answer 1

The correct option is A 1061208
Using the identity,
$(a+b{)}^3=a^3+b^3+3ab(a+b)$,

$\Rightarrow$ ${102}^3$ $=(100+2{)}^3$

$={100}^3+2^3+3\times 100\times 2(100+2)$

$=1000000+8+61200$

$=1061208$