Direction (94-98): Study the following table to answer the given questions.
         Centre and Post-wise Numbered of candidate

In Chennai, the number of clerks is approximately how much percent more than that of officers?

A man can row $$7{1\over 2}km/h$$ in still water. If a river running at 1.5 km an hour, it takes him 50 minutes to row to a place and back, how far off is the place? 

A sum borrowed under compound interest doubles itself in 10 years. When will it become fourfold of itself at the same rate of interest?

PA and PB are two tangents to a circle with center o from a point P outside the circle. A and B are points on the circle. If ∠OAB = 35° than ∠APB is equal to: 

The average of five numbers is  27.  If one  number is excluded. The average becomes 25. The excluded number is

The simple and compound interest that can be earned in two years at the same rate is Rs 1500 and Rs 1575 respectively. What is the rate (% per annum) of interest?

A works 7 hours a day at the rate of 180 per hour. B works 5 hours a day at the rate of 160 per hour. What is the ratio of daily earnings of A and B?

If $$ {P={96\over95×97}},{Q={97\over96×98}}$$ and $$ {R={1\over97}}$$ then which of the following is True?