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National and Regional Contests
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USA - Middle School Tournaments
Math Invitational for Girls
2019 MIG
12
12
Part of
2019 MIG
Problems
(1)
2019 Individual #12
Source:
5/1/2022
Calculate the product
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21
\tfrac13 \times \tfrac24 \times \tfrac35 \times \cdots \times \tfrac{18}{20} \times \tfrac{19}{21}
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19
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210
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190
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<span class='latex-bold'>(A) </span>\dfrac{1}{210}\qquad<span class='latex-bold'>(B) </span>\dfrac{1}{190}\qquad<span class='latex-bold'>(C) </span>\dfrac{1}{21}\qquad<span class='latex-bold'>(D) </span>\dfrac{1}{20}\qquad<span class='latex-bold'>(E) </span>\dfrac{1}{10}
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10
1
2019 Individual