The greatest prime factor of 3199-3196 is

Four identical cylindrical chalk-sticks, each of radius $r=0.5$ cm and length $l=10$ cm, are bound tightly together using a duct tape as shown in the following...

Two identical sheets A and B, of dimensions 24 cm 16 cm, can be folded into half using two distinct operations, FO1 or FO2.In FO1, the axis of folding remains...