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Robot combinations

Problem

The art department has given you 100 different heads and 2 different bodies. Your task is to build robots consisting of one head and one body.
How many different robots can you make?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi