Where will you weight more : at the equator or at the poles ? 

I will weigh more at poles and weigh less at the equator since weight is the amount of force with which an object is pulled towards the centre of earth.

$W=m\times g$ ........... 1 

Where, $W$ = Weight

$m$ = mass

$g$ = Acceleration due to gravity

Since, mass is constant all the time, so,

$W\propto g$    ........2 

And we also know that , 

$g=G\frac{M}{R^2}$ 

Where, $G$ = Gravitational Constant

$R$ = Radius of earth

$M$ = Mass of earth

So, $g\propto \frac{1}{R^2}$ .......... 3 

From equations $2$ and $3$ , we get , 

$W\propto \frac{1}{R^2}$ 

Since $R$ is minimum at poles , and weight is maximum at poles and similarly since $R$  is maximum at equator, so weight is minimum at equator.

Hence, we weigh more at poles than at equator