Quantitative Aptitude - Arithmetic Ability Questions

If the shopkeeper sells an item at Rs 450 which is marked as Rs 600, then what is the discount he is offering?

The cash difference between the selling price of an article at a profit of 4% and 6% is Rs. 3. The ratio of two selling prices is:

What is the third proportional to 10 and 20?

Sec 45% + Tan 30% =

A rectangular playground ground of length 125 m and width 75 m, has a walking strip of width 3 m in the middle of the ground, along the longer side. What is the area of the ground without the walking strip?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

Two donkeys are standing 400 meters apart. First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. If two donkeys run towards each other after how much time (in sec) will they bump into each other?

Complete the number series by choosing the missing terms from the options. 32, 64, 256, 1536, ? ,122880,1474560