Which was invented first the telephone or the light bulb?

This can be tricky question. In the time of telephone invention there were bunch of light bulbs for decades. So, light bulbs are older and invented before telephone.

However tricky part is in patents. Alexander Graham Bell patented telephone in 1876, while Thomas Edison patented light bulb in 1879. That makes it three years after the telephone. But light bulbs versions were available even 50 years before working versions of telephone.

Anyway if you want to check this by yourself then here are resources for further readings:
http://en.wikipedia.org/wiki/Telephone
http://en.wikipedia.org/wiki/Incandescent_light_bulb