In the class interval 10 - 20, 20 - 30, the number 20 is included in :
A. 10 - 20
B. 20 - 30
C. Both of these intervals
D. None of these intervals
Answer:B
In the class interval 10 - 20, 20 - 30, the number 20 is included in :
A. 10 - 20 B. 20 - 30 C. Both of these intervals D. None of these intervals