1.
1. What will be difference in population 3 years ago and 2 years ago of Devon village, whose current population is 100000 and which is increasing at a rate of 25% every year?
2.
2. Shamik had invested same amount of sums at simple as well as compound interest. The time period of both the sums was 2 years and rate of interest too was same 4% per annum. At the end, he found a difference of Rs. 50 in both the interests received. What were the sums invested?
3.
3. What will be the interest earned on sum of Rs. 5500 kept for 6 months at 25% interest rate compounded quarterly?
4.
4. Rs. 400 is simple interest for a sum for 4 years at 10% rate of interest per annum. Find the compound interest for the same sum at same rate of interest for same time period?
5.
5. A sum of money becomes Rs 13,380 in 3 years and Rs 20,070 in 6 years at compound interest. The initial sum is?
6.
6. The simple interest on a sum of money is 1/9 th of the principal and the number of years is equal to the rate percent per annum. The rate of interest per annum is __
7.
7. A sum doubles in 20 years at simple interest. How much is the rate per annum?
8.
8. A man invested 1/3rd of the sum at 7%, 1/4th at 8% and the remaining at 10% for one year. If the annual interest is Rs. 408, then the investment is
9.
9. A sum of money doubles itself at compound interest in 15 years. It will become 8 times in
10.
10. If the amounts for a fixed principal after 3 and 2 years at a certain rate of compound interest are in the ratio 21 : 20. The rate of interest is
11.
11. The difference in the interests received from two different banks on Rs. 1000 for 2 years is Rs. 20. Thus, the difference in their rates is
12.
12. A tank contains 18,000 litres of water. If it decreases at the rate of 5% a day, what will be the quantity of water after 2 days
13.
13. A merchant borrowed Rs. 2500 from the money lenders. For one loan he paid 12% per annum and for the other 14% per annum. The total interest paid for one year was Rs. 326. How much did he borrow at each rate?
14.
14. The difference between the compound interest and the simple interest on a certain sum at 10% per annum for two years is Rs. 60. Find the sum.
15.
15. What is the difference between the compound interests on Rs. 5000 for 1 years at 4% per annum compounded yearly and half-yearly?
16.
16. The lengths of sides of triangle are x cm,(x + 1) cm and (x + 2) cm, the value of x when triangle is right angled is
17.
17. Each side of square field ABCD is 50m long, the length of diagonal field is
18.
18. In a triangle with sides a,b and c, if a² = b² + c², then angle facing b is
A.
B.
C.
D.
Can be either acute or obtuse
19.
19. If the sum of the squares of the legs of a right triangle are equal to 144, the hypotenuse is...
20.
20. In the evening, the shadow of an object is very long due to the low position of the Sun. A 20m high lamp post makes a 99m long shadow. What is the distance from the top of the pole to the top of its shadow?
21.
21. For the triangle it is given that AE^{2} + EB^{2} = 9 and BE^{2} + EC^{2} = 16
Find AC = ?
22.
22. Given that: SinA = a/b, then cosA = ?
23.
23. The value of (tan1° tan2° tan3° ... tan89°) is
24.
24. If sin A = 1/2 and cos B = 1/2, then A + B = ?
25.
25. If a pole 6m high casts a shadow 2√3 m long on the ground, then the sun’s elevation is