Quantitative Aptitude - Arithmetic Ability Questions

Direction: What should come in the place of question mark (?) in the following number series? 24, 25, ?, 41, -8, 73

If ABCDEF is a regular hexagon, then what is the value (in degrees) of ∠ADB?

Two students appeared for an examination. One of them secured 20 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are

When a number is increased by 216, it becomes 140% of itself. What is the number?

The incomes of X and Y are in the ratio 5 : 6 and their expenditure are in the ratio 6 : 5. If X saves Rs 7000 and Y saves Rs 15000, then what will be the income (in Rs) of X?

The maximum value of 5+20x-4x2, when X is real number

A shopkeeper marks up his wares by 80% and offers 20% discount. What will be the selling price (in Rs) if the cost price is Rs 450?

S does half as much work as T in 1/7 of the time taken by T. If together they take 21 days to complete a work, then how may days shall S take to complete that work alone?