Question

1 upon 2 square minus 1 upon 4 cube
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Answer 1

$\frac{1}{2^{2}} - \frac{1}{4^{3}}\\ = \frac{1}{4} - \frac{1}{64}\\ = \frac{16}{64} - \frac{1}{64}\\\\= \frac{15}{64}$

hence, 15/64 is the answer