Question

isska Ans. bata do jaldi kal mera paper hai ,, aur iss ghatiya type ke que. kaise solve kru???​

Answer 1

Answer:

To find : value of x.                                

Given :

Class                 0 - 10      10 - 20      20 - 30      30 - 40      40 - 50

Frequency           8             x               10                11                9    

Mid-value             5           15              25               35              45                  

Mean = 20

To find the value of x :

40 + 15 + 250 + 385 + 405 = ( + 38 )( 20 )

1080 + 15  = 20 + (20 × 38)

1080 + 15 = 20 + 760

Arranging "x" terms,

1080 - 760 = 20 - 15

5 = 320

= = 64

= 64.        

Therefore, the value of x is 64.

HOPE IT HELPS..

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esehi hai sare krna try...

Answer 2

Answer:

I think answer is 4/3 .

Step-by-step explanation:

See in the attachment.

iss ghatiya type ke que ko kaise solve karne ke liye book padhu achhe se.