Welcome to your 07 Math Free

1. 
I spend 2/5 of my salary in rent and 3/10 on food. I give 1/5 of my salary to my younger brother Priyansh. How much part of the money I spend?
2. 
The reciprocal of 1/10 is
3. 
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.
4. 
(-9) × 17 is not equal to:
5. 
If one side of a square is represented by 18x – 20 and the adjacent side is represented by 42 – 13x, find the length of the side of the square.
6. 
Find the value of 26 × (– 48) + (– 48) × (–36)
7. 
If r and t are two integers such that r is the successor of t, then what is the value of r - t - 1?
8. 
What should be multiplied with -3/7 to obtain the nearest integer?
9. 
Find the value of 8 × 53 × (–125)
10. 
There is a circular pond and a footpath runs along its boundary. A person walks around it, exactly once keeping close to the edge. If his step is 44 cm long and he takes exactly 400 steps to go around the pond, then find the diameter of the pond.
11. 
When a number is multiplied by 5 is increased by 80, what is the number?
12. 
Every fraction is a rational number.
13. 
The root of 3x-4=2 is
14. 
Amit bought a cricket ball for Rs. 35 and sold it to Prakesh at 20% profit. What did Prakesh pay?
15. 
A shopkeeper buys 10 eggs @ ₹ 8 and sells at 8 eggs @₹ 10. Find his gain or loss percent.
16. 
Which of the following is not the additive inverse of 10?
17. 
If Aashana’s income is 20% more than that of Priya, then how many percent Priya’s income less than that of Aashana?
18. 
A number when divided by 6 gives the quotient 6. What is the number?
19. 
A number has two digits whose sum is 9. If 27 is added to the number; its digits get interchanged. Find the number.
20. 
Multiplicative inverse of -3/5 is