Directions(Q.11 to Q.15 ):

What will approximate value come at the place of question mark:

$frac{{11.98 imes 15.89 + sqrt[3]{{215.98}}}}{{sqrt {288.98} }} - frac{?}{{51.98 imes 2 - 52.98}} = 0$

$frac{{12 imes 16 + sqrt[3]{{216}}}}{{sqrt {289} }} - frac{?}{{52 imes 2 - 53}} = 0$

$frac{{192 + 6}}{{17}} - frac{?}{{51}} = 0$

$frac{{198}}{{17}} - frac{?}{{51}} = 0$

$frac{{594 - ?}}{{51}} = 0 Rightarrow ? = 594$