Book Online Demo

Check Your IQ

Try Test

Courses

Offline Centres

The class size and class mark respectively of the class 15-20 is:

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

17.5,15

5,15

5, 17.5

5,20

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The given class is 15-20.
Here, upper limit = 20, lower limit = 15.
Now,
Class size =

upper limit – lower limit

\Rightarrow Class size = 20 - 15

\Rightarrow Class size = 5

Also,
Class mark =

\frac{upper limit + lower limit}{2}

\Rightarrow

Class mark =

\frac{20 + 15}{2}

\Rightarrow

Class mark =

\frac{35}{2}

\Rightarrow

Class mark = 17.5
The class size and class mark respectively of class 15-20 is 5, 17.5.
Hence, the correct option is 3.

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE