Q11. 
When writing numbers from 1 to 10,000, how many times is the digit 9 written? 
A.  3200 

B.  3600 

C.  4000 

D.  4200 
Q12. 
Which digits should come in place of @ and # if the number 62684@# is divisible by both 8 and 5? 
A.  4, 0 

B.  0, 4 

C.  4, 4 

D.  1, 1 
Q14. 
How many natural numbers below 660 are divisible by 5 and 11 but not by 3? 
A.  8 

B.  9 

C.  10 

D.  11 
Q15. 
What is the maximum value of $m$ such that $7^m$ divides into 14! evenly? 
A.  1 

B.  2 

C.  3 

D.  4 