84-27÷3 X 2+7.5 X 2=
2,3,5,7,11,_____________
(0.81)²÷(0.729)³x((0.9)²=(0.9)^?-3
√(7²x24x2-(11)²+3)=?
1898÷73×73=(?)²x13
3/19 of 30% of 3420=(?)²x2