Question

The class mark of the class 90 – 120 is ______.

पर्याय

• 90

• 105

• 115

• 120

Answer 1

The class mark of the class 90 – 120 is 105.

Explanation:

In a given class 90 – 120,

Upper class = 120

And lower class = 90

We know that,

Class mark = `"Upper class + Lower class"/2`

= `(120 + 90)/2`

= `210/2`

= 105