Quantitative Aptitude - Arithmetic Ability Questions

The difference between the place values of 9 and 5 in the number 428693745 is

There were 24 studentsina class. One of them, who was 18 years old, left the class and his place was filled up by a new comer.Ifthe average of the class was thereby lowered by 1 month, the age of new comer is-

What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?

If (tanA ­- tanB)/(1 + tanAtanB) = x, then the value of x is

If the shopkeeper sells an item at Rs 4400 which is marked as Rs 5000, then what is the discount that he is offering?

Which single discount will be equal to two successive discounts of 12% and 5%?

Triangle DEF is right angled at E. If cot D = 5/12, then what is the value of sin F?

The slopes of two lines are 1 and √3. What is the angle between these two lines?