When a counterfeit detection pen is used on an authentic bill, what color does it turn?
a. Pal...
Chemistry, 05.05.2020 20:19 hunterthompson2
When a counterfeit detection pen is used on an authentic bill, what color does it turn?
a. Pale blue
b. Pale yellow
c. Blue-black
d. Pale pink
Answers: 1
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