2. A machine in a soft drink factory fills 600 bottles in 5 hours. How many bottles will it fill in 2 hours ?
3. The standard form of 0.000064 is :
4. The value of (-5)-2 x (-5)2
5. If ‘a’ represents the cost of apples and ‘b’ represents number of apples bought. Which option
shows that ‘a’ and ‘b’ are in inverse proportion ?
6. The value of ( 1/3 )-2 is : 7. The value of (a + b)2 – (a - b)2 is 8. If (2 ) m+2 × (2) 5 = (2 ) 8 , then the value of m is:
9. Volume of a rectangular box ( cuboid ) with length = 2ab , breadth = 3ac and height = 2ac is 10. Factorised form of p2 - 17p -38 11. 12 men can dig 8 meters long trench in a day. How many men should be employed for digging 50 meter long trench of the same type in one day? 12. The area of a square is 9x2 + 24xy + 16y2 . Find the side of the square .
