Quantitative Aptitude - Arithmetic Ability Questions

What should be the missing digit so that the number 275_476 becomes exactly divisible by 11?

The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

What is the value of tan 4π/3?

Two students appeared for an examination. One of them secured 16 marks more than the other and his marks were 75% of the sum of their marks. The marks obtained by them are

Ticket for an adult is Rs 1200 and a child is Rs 800 respectively. One child goes free with two adults. If a group has 25 adults and 5 children what is the discount the group gets?

To cover a distance of 144 km in 3.2 hours what should be the average speed of the car in meters/second?

The distance between the tops of two building 38 metres and 58 metres high is 52 metres. What will be the distance (in metres) between two buildings?

One of the two inlet pipes works twice as efficiently as the other. The two, working alongside a drain pipe that can empty a cistern all by itself in 8 hours, can fill the empty cistern in 8 hours. How many hours will the less efficient inlet pipe take to fill the empty cistern by itself?