C

a) Ta có:

16¹⁹= (2⁴)¹⁹=2⁷⁶

8²⁵=(2³)²⁵=2⁷⁵

Vì 2⁷⁶>2⁷⁵=> 16⁹>8²⁵

b)Ta có:

31¹¹<32¹¹ = (2⁵)¹¹=2⁵⁵

17¹⁴>16¹⁴ =(2⁴)¹⁴=2⁵⁶

Vì 2⁵⁵<2⁵⁶=> 32¹¹ <16¹⁴

=>31¹¹<17¹⁴

c)Ta có:

27¹¹=(3³)¹¹=3³³

81⁸=(3⁴)⁸=3³²

Vì 3³³ >3³²=> 27¹¹>81⁸

e)Ta có:

3²ⁿ =(3²)ⁿ=9ⁿ

2³ⁿ=(2³)ⁿ=8ⁿ

Vì 9ⁿ>8ⁿ=>3²ⁿ>2³ⁿ

d)Ta có:

5³⁶= (5³)¹²=125¹²

11²⁴=(11²)¹² =121¹²

Vì 125¹²>121¹²

=>5³⁶>11²⁴

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
________Chrismas Eve, people often have parties late at midnight.

A. In

B. On

C. At

D. From