Olympus FE-3010 has a
12.0MP 1/2.3-inch (6.08 x 4.56 mm ) sized CCD sensor . On the other hand, Nikon D50 has a
6.0MP APS-C (23.7 x 15.5 mm ) sized CCD sensor .
Olympus FE-3010's sensor provides 6MP more than Nikon D50's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the FE-3010 and D50 sensor size comparison.
As seen above, Nikon D50 has a 13.3x Larger sensor area than Olympus FE-3010. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.