Peter bought an item at 20% discount on its original price. He sold it with 40% increase on the price he bought it. The new sale price is greater than the original price (in percent) by: 

What should come at place of question mark (?) in the following number series?

15 20 50 165 680 ? 

The least number that must be subtracted from 1294 so that the remaining number when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

What is the value of $${tanθ−secθ+1\over tanθ+secθ-1}$$

Direction : What value should come in the place of question mark (?) in the following questions?

$$ \sqrt{1089} + 3=(?)^2 $$

(2x + 4) and (x - 1) are the angle pairs of angles of measurement, then their measurement will be

After allowing a discount of 12% on the marked price of an article, it is sold for Rs. 880.Find its marked price.

The ratio of the length of the parallel sides of a trapezium is 3: 2. The shortest distance between them is 15 cm. If the area of the trapezium is 450 cm.2, the semi-sum of the length of the parallel sides is