Question

find the value of the sum in pic​

Answer 1

Answer:

27/64 is your answer,........

Answer 2

Answer:

${ (\frac{4}{3}) }^{ - 3 } \\ = { (\frac{3}{4} )}^{3 } \\ = \frac{ {3}^{3} }{ {4}^{3} } \\ = \frac{27}{64}$

hope it helps...