Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 13,538

1. Solve:-

2. Solve :-

3. Using long division, show that (x+3) is a factor of

What are the other factors?

4. Find the quotient and the remainder, if any, when

is divided by (a-3).

5. Factorize the following:-

(a) x² + 17x + 60

(b) x² -5x - 36.

(c) x² + 9y² -6xy - 25a²

(d) 2x + 6y - 3(x+3y)²

6. Find the Greatest Common Divisor of

(a)

(b)

7. A bag contains coins of denomination $5 and $2. The total value of thse coins is $1272. If the number of $2 coins is 15% of the $5 coins, find the number of coins of each denomination.

8. The sum of digits of a two digit number is 15 and if 9 is added to the number, the digits are interchanged. Find the number.

9. In how many years will $5000 amount to $6655 at 10% per annum interest compounded annually?

10. If the volumes of two cones are in the ratio 1:4 and their diameters are in the ratio 4:5, find the ratio of their heights.

11. If the height and perimeter of the base of a right circular cone are respectively 15 m and 44 m, then what is the volume?

12. The ratios of heights of two cones of equal volumes is 16:9. What is the ratio of their base areas?

13. If the numerical value of the curved surface area of a right circular cylinder is equal to the numerical value of its volume, the numerical value of the radius of the base of cyliner is ________.

14. The lateral surface of a cyliner is developed into a square whose diagonal is √5 cms. What is the area of the base of the cylinder in square cms?

15. If the diameter of the base of a closed right circular cylinder be equal to its height h, then what is its surface area?

16. A cow is tied to a pole with an 8 m long rope. What is the area of the land on which it can graze?

17. If a square is inscribed in a circle, what is the ratio of the areas of the circle and the square?

18. Find the dimensions of a rectangular room if its diagonal is 17 meters and its perimeter is 46 meters.

19. A right circular cylinder and a sphere have the same volume and same radius. The ratio of the areas of their curved surfaces is ____________.

20. If a solid sphere of radius 10 cm is moulded into 8 spherical solid balls of equal radius, then what is the surface area of each ball in square centimeters?

Character is who you are when no one is looking.

Offline

Pages: **1**