A.\(16\)
B.\(32\)
C.\(64\)
D.\(128\)

A.\({5^3}\)
B.\({5^2}\)
C.\({5^6}\)
D.\({5^9}\)

A.\(5\)
B.\(25\)
C.\(125\)
D.\(625\)

A.\(3\)
B.\(4\)
C.\(5\)
D.\(6\)

A.\(a = 1\)
B.\(a = 0\)
C.\(a = -1\)
D.\(a = 2\)

A.\(a = 9;b = 0\)
B.\(a = 5;b = 0\)
C.\(a = 0;b = 5\)
D.\(a = 9;b = 9\)

A.\(69\frac{5}{{12}}\)
B.69
C.\(50\)
D.\(\frac{{81}}{4}\)

A.28
B.56
C.84
D.140

A.\(\frac{3}{5}\)
B.\(\frac{3}{{13}}\)
C.\(\frac{5}{{13}}\)
D.\(\frac{5}{8}\)

A.
B.
C.
D.