Quantitative Aptitude - Arithmetic Ability Questions

An article was sold for Rs. 2,400 at a discount of 20%. Find the selling price, if the discount was 25%.

The LCM of 72 and 84 is:

If sin(A/2) = x, then the value of x is

Select the odd word/letters/number/number pair from the given alternatives.

In the given figure, AQ = 4√2 cm, QC = 6√2 cm and AB = 20 cm. If PQ is parallel to BC, then what is the value of PB (in cm) ?

In the given figure, AB, AE, EF, FG and GB are semicircles. AB = 56 cm and AE = EF = FG = GB. What is the area (in sq.cm) of the shaded region?

How many three digit numbers are there in which all the digits are odd?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 198, then what is the difference between the first and the third number?