A.=
B.>
C.<
D.Tất cả đều sai

A.>
B.<
C.=
D.Tất cả đều sai

A.<
B.>
C.=
D.Tất cả đều sai

A.\(\frac{{19}}{{49}}\)
B.\(\frac{{47}}{{77}}\)
C.\(\frac{{109}}{{139}}\)
D.\(\frac{{17}}{{47}}\)

A.\(\frac{{1980}}{{1986}} < \frac{{1979}}{{1985}} < \frac{{1981}}{{1983}} < \frac{{1982}}{{1984}}\)
B.\(\frac{{1979}}{{1985}} < \frac{{1981}}{{1983}} < \frac{{1980}}{{1986}} < \frac{{1982}}{{1984}}\)
C.\(\frac{{1979}}{{1985}} < \frac{{1980}}{{1986}} < \frac{{1981}}{{1983}} < \frac{{1982}}{{1984}}\)
D.\(\frac{{1979}}{{1985}} < \frac{{1982}}{{1984}} < \frac{{1981}}{{1983}} < \frac{{1980}}{{1986}}\)

A.\(A > B\)
B.\(A < B\)
C.\(A = B\)
D.Tất cả đều sai

A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.

A.
B.
C.
D.