मान ज्ञात कीजिए|

$\frac {33}{40} + \frac {1}{5} \big[\frac {4}{5} - \frac{1}{5} \times(\frac {7}{8} -\frac{5}{4}) \big] - \frac {4}{5}$ का मान ज्ञात कीजिए|

Options:
a) $\frac 13$
b) $\frac 17$
c) $\frac 15$
d) $\frac 14$

SSC Constable GD Exam : Elementary Mathematics

Solution:

$\frac{33}{40} +\frac{1}{5}\big[\frac{4}{5} -\frac{1}{5}\times(\frac{7-10}{8})\big]-\frac{4}{5}$
$\frac{33}{40} +\frac{1}{5}\big[\frac{4}{5} -\frac{1}{5}\times- \frac{3}{8}\big]-\frac{4}{5}$

$\frac{33}{40} +\frac{1}{5}\big[\frac{4}{5}+\frac{3}{40}\big] -\frac{4}{5}$
$\frac{33}{40} +\frac{1}{5}\big[\frac{32+3}{40}\big] -\frac{4}{5}$
$\frac{33}{40}+\frac{1}{5}\big[\frac{35}{40}\big]-\frac{4}{5}$