Many of today’s mathematicians use computers to test cases thatare either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago
a) areeither too time-consumingor involve too many variables to test manually, allowingthe exploration of
b) either take too much time or involve too many variables to be tested manually; allowing he mathematicians to explore
c) would either take too much time or
...
a) areeither too time-consumingor involve too many variables to test manually, allowingthe exploration of
b) either take too much time or involve too many variables to be tested manually; allowing he mathematicians to explore
c) would either take too much time or
...




