Q57. Difference in the place values of 3 used at two places in the number 934530 is:

Q40. Find the area of four walls of a room having length 12.5 m, breadth 9 m and height 7 m

Q10. If 3 men or 9 boys can finish a work in 21 days, then in how many days can 5 men and 6 boys finish the same work?

Q11. The area of the largest circle, that can be drawn inside a rectangle with sides 63 cm and 42 cm is (π = )