There are 9 coins, out of which one is odd, i.e. its weight is either less or more than that of the other 8 coins. How many iterations of weighing using a pan balance are required to find the odd coin and to find whether it is heavier or lighter? 
A. 
2 

B. 
3 

C. 
4 

D. 
5 

E. 
It is not possible to find out the odd weight coin 
P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last? 

A. 5 days 
B. 10 days 
C. 14 days 
D. 22 days 
A ship develops a leak 12 km from the shore. Despite the leak, the ship is able to move towards the shore at a speed of 8 km/hr. However, the ship can stay afloat only for 20 minutes. If a rescue vessel were to leave from the shore towards the ship and it takes 4 minutes to evacuate the crew and passengers of the ship, what should be the minimum speed of the rescue vessel in order to be able to successfully rescue the people aboard the ship?
If A + B means A is the mother of B; A  B means A is the brother B; A % B means A is the father of B and A x B means A is the sister of B, which of the following shows that P is the maternal uncle of Q? A.Q  N + M x P
B. P + S x N  Q
C. P  M + N x Q
D. Q  S % P
Sara lives in a large city on the East Coast. Her younger cousin Marlee lives in the Midwest in a small town with fewer than 1,000 residents. Marlee has visited Sara several times during the past five years. In the same period of time, Sara has visited Marlee only once.
A. Marlee likes Sara better than Sara likes Marlee.
B. Sara thinks small towns are boring.
C. Sara is older than Marlee.
D. Marlee wants to move to the East Coast.
Four boys and three girls are seated in a row at random. What are the
chances that the two children at the ends of the row will be girls?
What is the next number in the sequence?
61 57 50 61 43 36 61 ? ?