55 75 65 70 60 45 85 LI U TH...

câu 3: - KIEM TRA 45 PHUT-DS10-C5,6
KIEM TRA 45 PHUT-DS10-C5,6
Câu 3:

55 75 65 70 60 45 85

li u th A. 70 B. 45 C.65 D. 55 Câu

55 75 65 70 60 45 85

P ơ

 

s

2

x

ẩ

 

s

x

ấ x li u th A.s

2

x

140;s

x

12, 247 B. s

2

x

160;s

x

14, 2 C. s

2

x

150;s

x

13,3 D. s

2

x

150;s

x

12, 247     . sau, m