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Mathematics, 23.09.2019 18:00 bobtothemaxthe1st

Hey! i know how to compare scientific notation, but i don't understand what they are asking me to do here.
in 2010, the number of participants in a checkers tournament was 2.6 × 104 people. in 2013, the number of participants in a checkers tournament was 5.2 × 106 people. by what factor did the number of participants increase from 2010 to 2013?
a
7.8 × 1013
b
2 × 1013
c
7.8 × 102
d
2 × 102

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