સંખ્યા ${\log _{20}}3$ એ . . . અંતરાલમાં છે
$\left( {1/4,\,\,1/3} \right)$
$\left( {1/3,\,\,1/2} \right)$
$\left( {1/2,\,3/4} \right)$
$\left( {3/4,\,\,4/5} \right)$
$\sum\limits_{n = 1}^n {{1 \over {{{\log }_{{2^n}}}(a)}}} = $
જો ${1 \over {{{\log }_3}\pi }} + {1 \over {{{\log }_4}\pi }} > x,$ તો $x$ એ .. . .. .
${\log _4}18 = . . . .$
જો $\log x:\log y:\log z = (y - z)\,:\,(z - x):(x - y)$ તો
$32\root 5 \of 4 $ to the base $2\sqrt 2 = . . . .$