Welcome to your 07 Math Free

1. 
The amount of water in a tank is twice the amount of water in another tank. If we draw out 25 liters from first and add it to the 2nd one, then amount of water in both the tank is same, Find the initial volume of water in tank First and 2nd respectively.
2. 
A number has two digits whose sum is 9. If 27 is added to the number; its digits get interchanged. Find the number.
3. 
In the standard form of a rational number, the common factor of numerator and denominator is always:
4. 
In the standard form of a rational number, the denominator is always a
5. 
What percent is 120 of 90?
6. 
Over a period of ten years the estimated number of tigers dropped by 65% from 1200. How many are estimated to be left?
7. 
The sum of three consecutive integers is 5 more than the smallest of the integers. Find the smallest integer.
8. 
What percent of ₹ 4500 is ₹ 9000?
9. 
What is 60 cm as a percentage of 4 m?
10. 
Mohan bought a Mobile for ₹ 9000 and sold at the loss of ₹ 900.Find the selling price of the mobile.
11. 
If two ratios are equivalent, then the four quantities are said to be in ______.
12. 
The height of a plant is x meter now. It becomes Y times its self after one week. What will be height after two weeks?
13. 
Which of the following rational numbers is equal to its reciprocal?
14. 
A shopkeeper spends Rs. 2000 on buying stock. He sells the stock for Rs. 2800. What is his profit as a percentage of the amount he paid for the stock?
15. 
In reference to a circle the value of π is equal to :
16. 
The smallest integer is zero.
17. 
|p - q| = |p| - |q|, where p and q are natural numbers and p < q.
18. 
The highest power of variable in linear equation is __________
19. 
Express 0.45 m as a percentage of 3 m.
20. 
Which sign will come in the blank space? – 231 + 79 + 51 _________–399 + 159 + 81