Question

what is class mark ? please tell​

Answer 1

Answer:

class mark means the middle value of digits

Step-by-step explanation:

for ex between 20- 30

THE CLASS MARK IS 25

Answer 2

Answer:

Class mark is the average of the lower limit and upper limit of a class.

Step-by-step explanation:

$class \: mark \: = \frac{upper \: limit \: + \: lower \: limit}{2}$