Q26. 
A box contains 9 red toys, 7 green toys and 9 blue toys. Each ball is of a different size. The probability that the red ball being selected is the smallest red toy, is: 
A.  1/9 

B.  2/21 

C.  1/25 

D.  6/25 
Q27. 
If five dice are thrown simultaneously, what is the probability of getting the sum as seven? 
A.  \(\dfrac{15}{6^5}\) 

B.  \(\dfrac{11}{6^5}\) 

C.  \(\dfrac{10}{6^5}\) 

D.  \(\dfrac{5}{6^5}\) 
Q29. 
If the probability that $X$ will live 15 year is 7/8 and that $Y$ will live 15 years is 9/10, then what is the probability that both will live after 15 years? 
A.  1/20 

B.  63/80 

C.  1/5 

D.  None of these 
Q30. 
Four boys and three girls stand in queue for an interview. The probability that they stand in alternate positions is: 
A.  1/35 

B.  1/34 

C.  1/17 

D.  1/68 