Q6. 
How many five digit multiples of 11 are there, if the five digits are 3, 4, 5, 6 and 7? Repetition of digits is now allowed? 
A.  10 

B.  11 

C.  12 

D.  13 
Q7. 
What is the remainder when $7^{187}$ is divided by $800$? 
A.  143 

B.  243 

C.  343 

D.  443 
Q9. 
IBMDaksh observes that it gets a call at an interval of very 10 minutes from Seattle, at every 12 minutes from Arizonia, at the interval of 20 minutes from New York and after every 25 minutes it gets the call from Newark. If in the early morning at 5:00 a.m. it has received the calls simultaneously from all the four destinations, then at which time it will receive the calls at a time from all places on the same day? 
A.  10:00 am 

B.  3:00 am 

C.  5:00 am 

D.  Both (A) and (B) 
Q10. 
If $n$ is a positive integer, which one of the following numbers must have a remainder of 3 when divided by any of the numbers 4, 5 and 6? 
A.  $12n + 3$ 

B.  $24n + 3$ 

C.  $90n + 2$ 

D.  $120n + 3$ 