Math (Practice Test-3) |

1.The mean of the four numbers is 6.5 if three of them are 4, 10 & 7 what is the fourth number?

- 7
- 5
- 3
- 2.5

2. if x² > 1, which of the following is true ?

- x > 1
- x < -1 or > 1
- -1 < x < 1
- x > 0

3. Which of the following has the greatest value ? 5/7, 3/4, 2/2, 4/5

- 5/7
- 2/2
- 4/5
- 3/4

4. How many microsecond are there in 2 minutes ?

- 2 × 10⁶
- 2 × 10⁷
- 1.2 × 10⁷
- 1.2 × 10⁸

5. Find the area of the square which is inscribed inside a circle of radius 16π.

- 254
- 256
- 265
- 245

6. The maximum value sinx + cosx is-

- 2
- √2
- -√2
- √3

7. A 60-liter mixture of water and milk contains the milk and the water in the ratio 2: 1. How many litres of water should be added to it so that the ratio becomes 1:2? 11.

- 20
- 40
- 30
- 60

8. With what rate of simple interest (annual) a sum becomes 4 times in 15 years?

- 10%
- 15%
- 8%
- 20%

9. The difference of compound and simple to side interest of a sum for two years at 5% annual rate of interest of Rs. 2. Find the sum.

- Rs. 400
- Rs. 600
- Rs. 800
- Rs. 1000

10. In a hotel, 8 people out of a spend three rupees each on food and the ninth people spend the two rupees more of the average expenditure of all. What is the total expenditure?

- Rs. 27.50
- Rs. 26.00
- Rs. 40.00
- Rs. 29.25