$\sqrt {(\log _{0.5}^24)} = . . $. .
$-2$
$\sqrt {( - 4)} $
$2$
એકપણ નહી.
જો ${1 \over 2} \le {\log _{0.1}}x \le 2$ તો
$\log ab - \log |b| = $
${\log _3}\,4{\log _4}\,5{\log _5}\,6{\log _6}\,7{\log _7}\,8{\log _8}\,9= . .$ . .
${\log _7}{\log _7}\sqrt {7(\sqrt {7\sqrt 7 } )} = $
$\sum\limits_{n = 1}^n {{1 \over {{{\log }_{{2^n}}}(a)}}} = $