Quantitative Aptitude - Arithmetic Ability Questions

The simple interest on Rs. 2000 for 2 years at Rs. 75 per thousand per annum will be

If cosθ1-sinθ+cosθ1+sinθ = 4, then the value of θ (0°<θ<90°)?

If 3n = 2187, then the value of n is:

If A = 30°, B = 60° and C = 135°, then what is the value of sin3A + cos3B + tan3C – 3sin A cos B tan C?

Giving two successive discounts of 20% is same as giving one discount of ________ %.

Three bottles of equal capacity have mixture of milk and water in ratio 5 : 7, 7 : 9 and 2 : 1 respectively. These three bottles are emptied into a large bottle. What is the percentage of milk in the new mixture?

The marked price of a trouser is twice of the cost price. To earn 36% profit, what should be the value of discount (in percentage)?

When a number is increased by 20, it becomes 116% of itself. What is the number?