Quantitative Aptitude - Arithmetic Ability Questions

If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?

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

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

Point P (8 , 5) is the midpoint of segment AB. Co-ordinates of A are (5, y) and B are (x, -3). What is the value of x?

If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]?

The value of x for which the expressions 15x + 4 and 13x - 2 become equal is ______