Question: what is the greatest possible length which can be used to measure exactly the lengths 10 m , 14 m 50 cm and 20 m 40 cm cm ?
A) 20 cm
B) 10 cm
C) 25 cm
D) 50 cm
E) 28 cm
Correct answer: B
Grade: 6 | Topic: Number System | Difficulty: Easy | Standard: 6.NS.B.4