The average monthly salary of the workers in a workshop is Rs. 8,500. If the average monthly salary of 7 technicians is Rs.10,000 and average monthly salary of the rest is Rs. 7,800, the total number of workers in the workshop is 

What will be remainder if (13)³ is subtracted from (66)² ?

Find the value of $$ {5^{1\over2}-[3^{1\over4}+6-4÷2]}$$

If $$ {3^{a+3}×4^{a+6}×25^{a+1}\over{27}^{a-1}×8^{a-2}×125^{a+4}}={4\over15^{26}}$$ then the value of $$ {\sqrt{a+9}}$$.

The ratio between the length and breadth of a rectangular park is 3: 2. If a man cycling along the boundary of the park at the speed of 12 Km./hr. completes one round in 8 min, then the area of the park in sq.m is – 

In what ratio does the point T (x, 0) divide the segment joining the points S ( -4, -1 ) and U ( 1,4 )? 

Direction: Study the following table carefully to answer these questions.

What is the average number of students appeared from all the schools in 2007?

Simplify : $$ {9\over 13} ÷{18\over 26}÷{90\over 52}$$