Question

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Answer 1

A

Answer 2

\(1-\dfrac{1}{4}=\dfrac{4}{4}-\dfrac{1}{4}=\dfrac{3}{4}\)

=> Chọn A

Answer 3

A

Answer 4

a

Answer 5

A

Answer 6

a

Answer 7

A. \(\dfrac{3}{4}\)