% contribution of Orange =  960  × 100 = 8.1% 
11840 
% contribution of Litchi =  1920  × 100 = 16.2% 
11840 
% contribution of Apple =  8960  × 100 = 75.7% 
11840 
=  30 × 5  =  25  m/sec. 
18  3 
⇒ 2x =  30 × 25  ⇒  10 × 25  = 125 m.  
3  2 
(  3  +  7  +  11  )  a  
5  10  15 
=  (  3 × 6 + 7 × 3 + 11 × 2  )  a 
30 
=  (  61  )  a 
30 
(  2  +  3  +  4  )  a  
5  10  15 
=  (  29  )  a 
30 
= 

= 61:29  

∴ The probability that the first ball is even numbered =  10 
21 
Since the ball is not replaced there are now 20 balls left, of which 9 are even numbered.
∴ The probability that the second ball is even numbered =  9 
20 
∴ Required probability =  10  ×  9  =  9  =  3 
21  20  42  14 